Hi. My fiance' and I are trying to plan our honeymoon for late May/early June and have no idea where to start. We have only about a week, and a limited budget. Neither of us have been out West (we're from Boston), with the exception of Northern California. We are particulalry interested in exploring Colorado, Wyoming, Utah area, as well as Arizona/ New Mexico (though my fiance' is concerned about heat, so we were thinking to maybe stay further north). We love the mountains! We like hiking and camping, though my fiance' doesn't want to spend the whole honeymoon doing that; he wants some hotels or cabins (though not necessarily luxury ones) and not to be spending all our days exercising. We're also interested in off-road driving, maybe white water rafting or kayaking, plus some sightseeing, getting the flavor of the local areas, etc.
So, how do we get that all in, without spending our life savings, without driving way too much. Do any of you have good trip itinerary suggestions?

If budget is an issue, I'd start by looking at airlines and car rentals. In my experience, Denver and Phoenix often have good deals on airfare, but car rentals can be a killer. Albuquerque and Vegas tend to have better rates for cars.

You can plan a nice loop from any of those airports that will provide a taste of the west. If you click on any of the states you are interested in, you will find lots of trip reports for the area. If you want to see what I mean, click on my name for a couple.

One thing that will help narrow it down is that you're a bit early for exploring the mountains--there will still be snow on trails, and some mountain roads and passes will still be closed. I'd scratch Wyoming off the list entirely--not enough accessible, and it will still be quite cold. You could have a nice time in Grand Teton and Yellowstone National Parks, if you could wait until early to mid June when more services and facilities are open. Temps will still be chilly, though.

You could also have a nice time in SE Utah--Arches and Canyonlands National Parks, and surrounding areas. There's easily enough to do for a week and lots of services and tours (ie off road tours) in Moab. But, the weather will be quite warm. It wouldn't be too hot for me but it might be for your fiance.

You could also combine that area with the SW corner of Colorado, where it will be cool still. I think the San Juan Mountains of this area are easily the prettiest mountains in Colorado. There are lots of tourist services and activities in towns like Durango and Telluride. You may not be able to hike during that time yet, but there is great rafting in the area, as well as hot springs, Mesa Verde National Park, and a beautiful drive on the Million Dollar Highway.

I'd get some guidebooks on these areas from the library, start reading, and see what appeals to you most.

First of all, there won't be "heat" in May or June in almost any of the areas you list.

Next, with a week, you really have to pick one area as the range of states you listed is huge and would take way more time to explore.

Albuquerque/Santa Fe/Taos would work, and you could add SW Colorado with Durango and you would be able to raft, off-road, hike, see Ancient Puebloan ruins, and get a real feel for the culture of the SW.

fly on Southwest airlines into Albuquerque, rent a vehicle and explore in a rather "compact" area that won't break the bank.

I have lots of threads on here about the area [it's where
I live], do a search to see some of them.

You listed an awful lot for a week.

Acouple of years ago I started in Salt Lake and looped thru Southern Utah.

We spent 4 days in Moab.

If you cut that down to 2 days you could spend a reasonable amount of timeas follows:
Arches NP
Goblin Valley
Capitol Reef
Lower Calf Creek Falls
Bryce Canyon
Zion

This loop would be about 5 hours from/to Salt Lake. That way you save on dropoff charges for a car.

I was just in SW Utah with my daughter. Not counting travel days we spent 3 days as follows:

Devil's Garden Escalante (not to be confused with Devil's Garden in Arches NP)

Hiked to Lower Calf Creek Falls (about a half hour too long for the middle of the day)

Willis Creek slot canyon a bit east of Bryce Canyon.

Bryce Canyon - Sunrise at Bryce Point and hiked Navajo Loop - Queens Garden

Zion - hiked Angel's Landing as far as Scouts Lookout and walked Riverside Walk.

It was a full 3 days but we never rushed anything.

I enjoy being non-stop. You may want less full days. Maybe not.

Beautiful weather in late May early June.

It is uber cheap to rent cars in Vegas. And its a fairly quick drive from Vegas to National Parks in the southwest corner of Utah and Grand Canyon.

If you go in/out of Vegas, spend your week in Zion and Bryce. You can do most of what you want there, except rafting. It will be in the 80's or even low 90's at Zion and abot high 70's at Bryce.

If it were me and the price was right, I'd fly into Grand Junction, CO and drive to Moab. Spend the whole week. You can do everything you want there. Temps will be 80's maybe low 90's. Early May is better for Moab. Horseback riding, rafting, canyoneering, mountain biking, road cycling, off roading, spas, a few really good restaurants too. Even relaxing by the river or the pool.

Several years ago we spent about 8 days in AZ. Flew into PHX, drove to Sedona, then to the Grand Canyon, Page, and finally Flagstaff. Jeep trip, hiking and train ride in the Sedona area, hiked partway down GC and along the rim, float trip and Antelope Canyon in Page, more hiking around Flagstaff and visits to Wupatki/Sunset crater and Walnut canyon. I know AZ is not on your list, but this was a great trip with no more than a three 1/2 hour drive between each destination. You could do a similar trip in reverse, ending in Sedona which has a lot of upscale resorts and cabins if you want to have a honeymoon like end to your trip. With the exception of Page, these destinations are higher elevation and generally much cooler than Southern AZ.

You could also do a loop from Las Vegas as StantonHyde suggested. Cheap flights and car rentals and could easily see Bryce, Zion and Northern Rim of the GC.

Or you could

With a limited budget and only a week, go with southern Utah.
If you want to see Zion/Bryce Canyon fly to Las Vegas. My latest car rental was with National/Alamo in LV. I bid $14/day on Priceline and got it.
Last November My DW and I rented a car in Salt Lake City and based in Green River (Robbers Roost motel) to see Capitol Reef, Canyonlands and Arches National Parks. We also visited Goblin Valley State Park and checked out some dinosaur footprints on BLM land. We ate a couple of meals in Moab but stayed in Green River to save some money. Here's hoping that the gas prices don't go much above $4/gallon.
For an anniversary trip I suggest Yosemite or Glacier NP.

Moab, Utah has hiking, biking, white water rafting, 4x4 drives, kayaking, camping and camping. With Arches National Park and Canyonlands National Park and the La Sal Mountains you can find a lot to do in a week. You might fly in and out of Denver and can explore Rocky Mountain National Park.

Utahtea

One should hope these people have already planned their honeymoon by now - LOL