Been there, done that... with our DD's and now grand kiddos...
So here are the best tips I can give you.
* Make a loose plans, and be prepared them to all fly out the window! Pack double on the patience...
* If you want to do table service meals, Breakfast and lunch worked for us.... Think about do you really want to try to sit down and enjoy a nice meal with over tired kiddos'... We stuck to this plan until about middle school and worked for us...another reason if you start getting into the dinner hour and they are tired, and you have ADR's and don't make them, they are going to charge you a no show fee...
* Double check and recheck the menus, this way you know what is available around you at any given moment, no sense in getting in somewhere and ready to order and there is nothing that the kids will eat.
* Have snacks ( raisins or other dried fruit - yogurt covered raisins or cranberries, Belvita or protein bars, nuts, cookies, crackers, chips) and something to do in line while waiting in line, sitting at a table service... everything from coloring books, to electronic's... head phone are great, this way it cuts all the noise out, and lets them decompress as well it gives the adults a chance to relax... Dollar tree is a great source for items like this... I would take a stash of little stuff, and give it out slowly, something new will keep their attention a bit longer...
* Have something for them to do in the room while everyone is getting ready. Also some easy breakfast item for them to eat right away. packaged muffins, cereal bars, juice boxes, individual milks.... My grandson when he opens his eyes he hungry...
As well something for them to eat when you get back to the room. For us alot of times we would get something in the resort food court, and they would eat like a pack of starving wolves... lol...
* Don't forget their favorite stuffed animal to sleep with... blanket or whatever this help with something familiar for them to sleep with... and whatever you do don't forget to put it in the back pack first when packing up on check out day...
* Taking a break with this age group is a good idea, just stepping out of all the excitement can be a life saver later on. Not sure if you are going when its warm enough to swim, this is a great way for them to burn off some excess energy...
* I agree start with the rides that aren't in the dark, and go forward from there...
* Make sure you have some kids OTC medicine on hand, stomach ache, vomiting, diarrhea, ibuprofen, allergy medicine, neo to go, and bandaids of all sizes, especially the big square ones for a blister that can pop up, I have mid-size makeup bag that I use for all this stuff in the room and a smaller one in the backpack to refill every night for the next day... as well include adult OTC med's in this as well.... I can not tell you how many times this has come in handy, and saved us... DH and I travel, and this is something that we use on every trip...
* Oh yeah.... sunscreen... Apply in the room before you head out, that last thing you want to be doing is trying to get the sunscreen on them and they are ready to get their Disney on. As well it give the product time to set... I use the travel size for in the park...
* Restroom breaks - stop often and I mean often... Nothing worse than being in line for 45 minutes and they say I have to go to the bathroom and normally this meaning they can not hold it... as well watch their body language if they start squirming around, they will say no I don't have to go, and no matter still stop... look around or at the maps as you are heading into a different area, in an potty emergency you want to know where you need to go.... bring a full extra outfit for both of them or two... you never know what is going to happen, better to have something on hand and not need it then have a kid with wet bottom and nothing to change them into... make sure to have some wipes... I know that they are older, just trust me on this one... as well if they say, my stomach hurts, or I feel like I am going to throw-up listen to them... just trust me on this one as well... As well how are you going to handle who takes them to the restroom? family restroom? plus what are the rules when in those big public bathrooms? seat covers, not touching anything, and staying together, and hand washing and more hand washing... I know this kinda sounds silly but it's important...
* You have to realize that they are kiddo's and most likely there will be some kinda meltdown... maybe it's them or the grown ups... The best tip I have is to practice eating out especially at fast food where you are juggling a tray with drinks and kids, going into public bathrooms, wearing the mask... as well you might think about showing them POV of the rides on you tube..
* Above all have a wonderful time...