Hello, Betty!
Your birthday princess must be getting so excited about her Sweet 16 celebration! The Walt Disney World Resort is the most magical place to celebrate a special occasion, and I'm sure you are planning a very special trip to mark this BIG event in your daughter's life. I am pleased to share that your daughter should be able to meet with her favorite Disney Character friends without FastPass+, though I would like to offer some additional advice on this complimentary service to help you make the most of your weekend visit. Disney's FastPass+ service is not required to experience any attraction at the Walt Disney World Resort, including
meet 'n' greet opportunities with favorite Disney Characters. You may find that Disney's FastPass+ service can significantly reduce the amount of time your family spends waiting in line, especially at popular attractions and Disney Character greetings. I have found Disney's FastPass+ service to be especially helpful for quick weekend visits, as it allows Guests to spend less time waiting in line and more time experiencing the magic of the Walt Disney World theme park attractions.
Each FastPass+ selection offers an arrival window (typically 1 hour long, but it can vary depending on attraction type), and unlike a restaurant reservation, you may show up at any time that you wish during this time period. Please also keep in mind that if your family's plans do change, you should be able to modify your FastPass+ selections online with your mobile phone with the free My Disney Experience app, or by visiting a FastPass+ kiosk.
I hope your daughter has a fabulous Sweet 16 birthday celebration at Walt Disney World, Betty! Please don't hesitate to stop back by the Disney Parks Moms Panel if you have any additional questions. We would love to hEAR from you!