I don't think you necessarily need a Crock Pot to make a quick meal. We've made lots of quick dinners with just the microwave and/or oven (RI is our hotel of choice). We shop at Ralph's before checking in, and they have all kinds of pre-cooked items that you could throw together for a quick meal. Casseroles are great for hotels, 20 minutes in the oven and it'd be heated through. I throw together pre-cooked rice, chicken strips, a can of cream of mushroom soup, peas and carrots, some parmesan, Durkee onions on top with a side of microwave vegetable steamers with a bag of rolls. Or nachos: tortilla chips, shredded cheese, black beans, corn, salsa, onions, tomatoes, melt in the oven or microwave. Spaghetti is quick and easy too with frozen meatballs and some garlic bread that takes 8 minutes in the oven. It'll be done by the time everyone changes clothes and washes their hands.
A package of hot dogs, buns, chili and onions on top with shredded cheese.
Or just have a rotisserie chicken on hand that you got from the grocery store, a side salad, rolls, microwave rice, since you'll have a regular sized fridg to store it all.
I have also cooked an enchilada casserole in the oven while everyone was getting ready in the morning. Then it just needs to be heated for dinner - it's already cooked.
Another quick and easy is tacos. Just brown the ground beef or turkey and add a seasoning packet. We like the vegetarian soy taco "meat" - just needs boiling water, so that's about 3 minutes from stove to table (and it even fools my midwestern DH). Then just chop tomatoes, onions and lettuce. Add a side of corn.
Etc, etc.
There are entire websites devoted to hotel cooking. Some of the recipes are brilliant!
Bon Appetit!