If you're sharing the cost, how about "sharing" the itinerary? Make a list of activities/restaurants (OK if too many choices). You choose the itinerary two days, she chooses the other two. Rules are that there's no complaining - if either party doesn't want to do an activity on the other party's day, then they "opt out" & keep busy until the next activity (Go shopping/have tea/take a nap/sit by pool, etc.) Incorporate some "boys'" choices in both sets of days, so no-one feels left out.
Even if you wouldn't particularly enjoy a certain activity, you may be surprised that making someone else happy may make you happy (at least for a part of a day!) - good teaching experience on both sides...

Good move on moving to Savannah.
If you are interested in a day trip, drive down to Jekyll Island. She may enjoy the historic cottages and the Jekyll Island Club, where the world's wealthiest spent winters on a private island. 10% of the world's wealth congregated there each winter and the Federal Reserve Bank was created there in secret. All of you may enjoy a walk on the long beach. Great biking around the island for the kids. New shopping/ stores to browse at the roundabout.

A day trip to Cumberland Island would be fabulous, but you'd need to give up one night and spend it at St Marys before taking the ferry over. An almost deserted island, with miles of beaches and wild horses. There's a new van tour of the island going to the ruins of the mansions. JFK Jr was married in the tiny chapel there. Truly almost one of a kind.

Cumberland isn't really an option...she doesn't enjoy switching hotels. She fully unpacks, lines drawers with tissue paper, etc. It's too much of a hassle for her.

I gave her free reign on the dining. I emailed a few dozen menus for places with good reviews. She's the most finicky eater of everyone going, so it's easier to let her control that. Note: I'd love to try Mrs. Wilke's but my oldest has social anxiety and community seating isn't an option. Tried it once. Didn't go well.

Her choices:
Breakfast - included in hotel. Would like to go out one morning. Haven't figured this meal out yet.
Lunch - Joe's Homemade Cafe, Cafe M, Paula Deen's Creek House, Sweet Potatoes
Dinners - Vinnie Van Go Go's, The Pink House, Garibaldi's, and need one more.
Dessert - Leopolds

I gave her numerous attractions to choose from as well. She opted out of a day trip to Hilton Head. Here is what we are planning.

Wednesday - arrive, lunch at Joe's, check in to hotel, then just walk around the historic district and use the pool.

Thursday - early morning drive to the Savannah Wildlife Sanctuary just over the border in SC to do the 4 mile drive. Maybe the boys will see a gator or two. Then we'll go pick her up. Head to Wormsloe and Pin Point for the day. Lunch will be at Sweet Potatoes.

Friday - 930am historic walking tour, lunch at Cafe M, Savannah History Museum (230pm battle reenactment), RR Museum. Dinner at Pink House at 530pm before the date crowd.

Saturday - Fort Pulaski, lunch at Paula Deen's, head over to Tybee Island to walk the beach, check out the light house, etc.

Sunday - head home

Am I missing anything? Something not make sense?

Day trip to Hilton Head? Non-starter--no "there" there, IMO. Don't see it on your final list that looks quite comprehensive so that's good.
The gators will be in their wallows hibernating at this time of year. If that is a point of this, you might reconsider.

Yes, she said no to Hilton Head, so I took it out of the itinerary and put in Wormsloe and Pin Point instead.

Bummer on the gators. I was hoping by 2/28-3/4 (our dates), the high 60s weather would bring them out. If not, we can skip that short trip.

You can call and check but we found this true at the park near Litchfield that has a LOT of gators.

Our favorite breakfast spot in Savannah is Goosefeathers.

http://www.goosefeatherscafe.com/

Thoughts - Cafe M is tiny and nearby parking is virtually nil. Get there early and walk there, or drop her off and move the car to park.

Garibaldi's and Olde Pink House are sister restaurants. Good news = great menu and you could eat there everyday for a week. Bad news = similar menus if you are looking for a different approach.

I'd still head out to Wormsloe and drive to the Isle of Hope Marina and look to the left to see the gorgeous homes of the Bluff. You may want to stop at Sandfly for some shopping and/or eat at the Sandfly BBQ.

http://www.sandflybbq.com/
http://www.10best.com/destinations/g...pping/sandfly/
If you like antiques/vintage, go to the Sandfly Market Place -
http://www.sandflymarket.com/media

If your trip was later in the year, you could watch the Savannah Bananas -
https://thesavannahbananas.com/

If you have an extra day, still consider a day trip to Jekyll Island. Walk the great beach. Drive around the historic area. The kids might enjoy a kayak trip in the marsh out of the 4H center while you lunch at the Dining Room at the Jekyll Island Club.
Kayak -
http://www.tidelands4h.org/tours.html
Grand Dining Room -
http://www.jekyllclub.com/jekyll-isl...d-dining-room/
All would enjoy the Sea Turtle Center -
https://www.jekyllisland.com/activit...ry/sea-turtle/
Or just walk the beach.

I dunno--it was cold when we went to Savannah and Charleston--and the gators were out sunning themselves at the plantation we visited. yikes!

Time of year? Just curious? I suggested she call the park for that info and that would be a good idea.

OR maybe this will happen. We were at our Litchfield villa one February when the lagoon froze over--herons were walking on the ice with their fish catches.
However, THIS was in our paper this morning. Alligators frozen in the ice!!
http://www.charlotteobserver.com/new...193602684.html

The Wildlife Refuge is only 10 minutes away. So we'll just drive up and check it out.

Starrs - thanks for pointing out the small size of Cafe M. She REALLY wants to go there. I think I'll find a back up in close proximity in case we arrive and the wait is crazy. Also, Sandfly looks good!