Any recommendations where to stop between Vancouver and Kelowna for lunch or any special scenic attractions. Or do you suggest going straight through?

Which way are you heading to? While the Coquihalla is the fastest way to get straight through to Kelowna, if you're interested in special, scenic attractions and can spare the extra hour or two, I would highly recommend taking Hwy 3 (the "Crowsnest" Hwy) all the way to Hwy 97. Far more scenic, and you'll actually have places to stop off... (the Coquihalla doesn't have many, if any, stops).

If you decide to take Hwy 3, you can pack a picnic lunch and enjoy it at Manning Provincial Park. This park's located along the BC-Washington border in the Cascade Mountains. Lots of trails, campgrounds, lakes, and stopping areas.

Once you get out of Manning Park, you'll notice that the vegetation starts changing... and that marks the beginning of the semi-arid zone. You'll eventually enter the farming community of Keremeos with a good dozen or so fruit and vegetable sends. Definitely stop off at Bear's!

Afterwards, you're not too far away (an hour?) from Pencticon. From Penticton it's about an hour drive up Hwy 97 along Okanagan Lake to Kelowna. There will be several wineries and fruit stands to visit along the way.

You'll have plenty of options, and it's a very enjoyable drive.

If you take the Coquihalla you can only really stop in Hope or Merritt. Hope has lots of fast food, Merritt is quite a few minutes drive from the highway. I agree, the Crowsnest Pass is much more scenic, but it does take a bit longer and isnt as convenient as the Coquihalla as it is only 2 lanes in some areas, which makes it slow going in the summer.

Have fun!

Just for the record that part of Hwy 3 is called the Hope Princeton Highway. Princeton has a couple of good eating spots and there is the little town of Hedley as well. The old Nickel Plate mine is there - just a little old history. This route is far more scenic and really doesn't add any extra time to the trip. Penticton is lovely to drive through because you have a lake at either end and vineyards etc. The Coquihalla is just trees and more trees.

We stopped in Merritt at a place that looked like an old saloon. Great food and lots of local flavour!