If you haven't already, you will soon receive shore excursion info in the mail. Once you've paid in full, you will automatically be given a link to the excursion choices site, but it's kind of fun to get the brochure. Check the DIS boards for suggestions and trip reports to help you make your plans.
It's a good idea to DOUBLE CHECK all your identification to make sure you have official copies of birth certs and/or your passports have not expired.
Daydreaming is unavoidable--have fun planning and remember not to get too hung up on having or doing any one thing. That's all I can think of for now...Have a wonderful trip!
GoodFaerie