You have a lovely family!!!
For your first ? -- If you can not get reservations before you leave when you get to the village, see if someone there can call & see if they can get them for you.
2. you can rent lockers at the front of the parks if you can not carry what you bring in.
TIP- Go early to the parks - at rope drop- it will be HOT the dates that you are going so going to the parks early in the morning might work better for you.
The pp suggested taking frozen water or juice bottles, this is a great tip & even a frozen wet washcloth is great also for cooling you off.
3. At Hollywood Studios they have a great show with Micky Mouse Clubhouse, Doc McStuffins, & Sofia the First, & Jake & the neverland pirates.
4.Merida & Tangled are meet & greets only, they are not at any of the character dining.
5. I would allow at least $200.00 for you family to spend for extras but at the village, they will leave something in your villa everyday, books,games,stuffed animals, ect. ect.
6. Will you have a rental car? or will you be using Mears Bus Services?
This might make a difference on what time you get to the parks & leave.
7. I would look at each park map & study it & decide about what you would like to do each day, where everything is (what section-like Frontierland, Adventureland, ect ect) BUT JUST REMEMBER TO GO WITH THE FLOW, YOU WILL NOT BE ABLE TO SEE & DO EVERYTHING.
My little one wanted to go back to Give Kids the World Village after just a few hrs at the parks.
MAW will give you spending money for food but you can eat all of your meals at the Village, we did this alot so we had more money left for DD to buy more things for her to bring home, she was to small to ride most of the rides, she done mostly Meet & Greets & Magic Kingdom was packed, so we did not stay long there. Our second trip was in February, so crowd levels was better & we had a much better time at Magic Kingdom the second time.
If I think of anything else, I will post, We went in 2011 & a return trip this yr. I knew alot more the second time than I did the first, & we seen & did alot more this time & we visited the Village again- this is such an Awesome Place.
My DD has Evans Syndrome. She is stable now, so we made a second trip to celebrate her 5th Birthday.