Hope none are repeats, you've gotten some good ones.
We make 2 copies of everything: insurance cards, credit cards, etc, and keep them in the safe in the room and in the glove box.
Make sure all appliances are shut off, unplugged if possible.
Make sure windows are all locked, no water is dripping anywhere, lights off, AC turned down or off...
Give neighbor numbers for you if emergency.
Water everything.
Pet care.
I totally agree with the cleaning. I've stayed up all night to make sure towels are washed before we go! I even pour pine sol in the toilets so the house smells better when we get back!
Double check your packing list.
Watch videos of rides on you tube!
Make a budget. Think about what souvenirs you really,really want. For me, I have to buy something with the castle on it every year. Last year, I also wanted the wishes soundtrack.
If you are into pressed pennies, clean some up with tabasco and/or ketchup.
Charge camera batteries. Get a new memory card. Charge all electronics you will be taking with you.
Alert bank you will be traveling, so if they see some mega out of town charges, they'll know what to expect.
If you want to order any surprises: cakes, florist, etc. My girls love the slipper dessert that is at CRT and 1900 Park Faire.
Pack your park bag, so you are ready to hit the parks when you get there.
Make room requests if you want to, confirm all ADR's and room. You'll feel better!
Come up with whatever system works for you for your itinerary. Make a couple of copies. I have an ipod touch, and we load everything onto it via air sharing.