Hi Ralph,
Happy first birthday to your daughter! My daughters have had many birthdays at the Walt Disney World Resort and we love celebrating there!
Walt Disney wanted families to spend time together. This is why there are very few attractions which have height restrictions. At the entrance to an attraction, it will list any restrictions including height. It will also note other items about an attraction. You can look online at each ride as well.
For example,
Pirates of the Caribbean Ride has no height restriction which makes your daughter eligible to ride. However, it is dark and this might be frightening to her.
Space Mountain has a height requirement and your daughter would not be able to ride. However, there is a
rider switch option available so you can ride.
As always, the cast members in the park can answer any additional questions.
Wishing you a magical first birthday!
Beth