Hi Shawn.
Make a day by day plan to make best use of your time and tickets.
Build in rest or slow days to avoid burn out.
Don't be lured into the shops as you enter the parks. They all stay open way after the rides close, and they offer air con for the middle of the day when you need a rest.
Let the kids cool off in the water/play areas. Remember they appreciate different things to us adults. DD3 may love It's a Small World, and you may have to go on several times!
Buy the Unofficial Guide and rip out the pages for the park you're visiting (sounds dreadful but they bring out a new version each year) each day. Staple them into a little booklet.
Check out which rides are scary and don't make the kids do anything they don't want. Baby swap is easy. There are plenty of new friends to make (and scream with) also doing baby swap!
Take a cooler with frozen drinks for when you get back to the car. They'll still be cold.
Wear comfortable shoes - broken in trainers or outdoor sandals. If you've just bought new ones, try to break them in a bit before you go. Take sticking plasters!
Use a bum-bag (fanny pack - can't believe they are called that!) to keep your hands free.
Buy rain ponchos at Publix or the clothes shop in CityWalk, on the right as you approach USF's globe. You can get different colours - cheaper than in the parks and easier to recognise your family!
But most of all, remember there's no way you can see everything, go with the flow and take time to smell the roses. You'll just have to go back another time to see all the things you missed!
Now I'm excited and we've 5 months to wait!