Hi Anna! We're always happy to help!
First, there's no need to return to your resort at 11 a.m. to check out. Your statement showing your charges will be slid under your door on your last night, and you don't have to stop by the front desk, unless you have questions about your bill. If you're using the Resort Airline Check In Service you can go ahead and check in for your flight and hand your luggage over before you head off to the parks that morning. Bell Services will be happy to hold your carry-on items for the day so you don't have to lug bags around the park.
Now, let's talk about my favorite subject: where to eat! So that you can take advantage of the short lines first thing in the morning at the Magic Kingdom, just pick up a quick counter-service breakfast, like a croissant sandwich or beignets at Tomorrowland Terrace. For lunch consider
Liberty Tree Tavern, where the menu has a variety of foods to please everyone. Be sure to save room for the Ooey Gooey Toffee Cake! You've already done several character meals but if you want one more, dining in the Castle at
Cinderella's Royal Table would be a magical last meal of your vacation, and you could have either breakfast or lunch there.
Come visit us again at the Mom's Panel if you have more questions!