Glad you are getting a crock pot! I totally agree that will be the easiest way to have nice meals since you have to fly in. Crock pot liners are almost mandatory, in my opinion.
We also do the chicken breast with picante sauce and a pack of taco seasoning. It will shred so easily and is yummy! Put it in tortillas with cheese and sour cream and it's the best!
Pot roast doesn't need seared. I never do that, even at home. Get baby carrots, so you don't have to peel them. A few potatoes and an onion. Since you are traveling, try a pack pot roast seasoning so you don't have to buy/bring every individual seasoning.
Not sure if you buy any frozen food at home, but if you are not used to it, Stouffer's makes the best of most things - lasagna, meat loaf, and their chicken/broccoli pasta bake is wonderful! All stuff you can just heat and serve that comes in family sizes. I would also opt for frozen pizza over what you can buy at the Fort. My family wouldn't even eat Fort pizza. We ended up throwing it away.
You will have to be a bit more creative since you are flying in. We only live a couple hours away, so I precook all homemade stuff and freeze it. We put a decent sized freezer in our camper so we are good to go for a couple weeks.
There is a grill on every site, so charcoal to make different meats on the grill is good too. As far as quick sides go, boxed flavored potatoes and pasta are pretty good and can be microwaved. Canned vegetables are much easier to deal with than fresh when you don't want to waste much time cooking.
Eggs are quick and easy for breakfast, or if you will have a toaster - bagels, english muffins, etc. Instant oatmeal, grits, fresh fruit. All good and fast.
Don't forget condiments when you make your food order! Have a great time.