Hi Karen,
Based on your question, it sounds like you have one day
Walt Disney World Resort theme park tickets, you are planning on spending your day at Disney's Animal Kingdom and you would like to also go to Disney's Hollywood Studios to enjoy
50's Prime Time Cafe. In order to enjoy both parks, you will need to upgrade your tickets to include the Park Hopper Option. This option will allow you to enter multiple Walt Disney World Resort theme parks during your day. You can upgrade by visiting any theme park ticket window, Guest Relations location or Walt Disney World Resort hotel concierge desk. Be sure to upgrade your tickets either before you use them or on the day you are attending. Once your ticket is upgraded, you will be able to enjoy Disney's Animal Kingdom during the beginning of your day and then head over to Disney's Hollywood Studios in the evening.
If you would prefer to enjoy just one theme park, your ticket is good for entry to one of the following theme parks: Epcot, Disney's Animal Kingdom or Disney's Hollywood Studios. So you could choose to spend your entire day at Disney's Hollywood Studios and your existing dinner reservation. Or, you could think about changing your reservation to enjoy one of the restaurants at Disney's Animal Kingdom. My kids love
Tusker House Restaurant because they can meet Donald Duck and friends. My favorite is
Tiffins, which is an amazing new restaurant with incredible food and drinks!
Please let me know if you have additional questions or I didn't quite answer what you were looking for. T-T-F-N, ta ta for now!
~Crystal B.