yikes! Thanks for the replies. This was a totally last minute trip and I never gave any thought to crowds. I will have my 3 young kids ages 9,6,3. Opening to closing would be too much since the youngest still takes a nap. We are staying in Orlando so it should be easy enough to get to SW early, leave and then come back for any nighttime entertainment.
I am worried about Busch Gardens though, since the drive is so long. Any advice on how to tackle BG?