Hi Samantha!
I wouldn't worry too much. Walt Disney World is the crown jewel of the theme park industry and most of the attractions are designed for the entire family, including very young guests. With a 2.5 year old child, you should be able to enjoy most of the attractions in all four theme parks. I know that sounds strange if you've been to other amusement parks before, but never to Walt Disney World. However, it's true. Walt Disney World has been designed with the family in mind. For example, in the Magic Kingdom, your daughter should be be able to do almost every attraction except:
- Space Mountain
- Splash Mountain
- Big Thunder Mountain Railroad
- Stitch's Great Escape
Be sure to check out this
page for information on traveling with very young guests! There's a link on that page to the height restrictions for the various attractions in the various parks. If there's no height restriction, then your 2.5 year old can ride!
The Magic Kingdom is obviously a "must see". Most 2.5 year olds also enjoy Animal Kingdom and Hollywood Studios. I can't tell you which one she might like better as every child is different. I can tell you that both of my kids had fun in all of the parks at that age, including Epcot!
Good luck!