Hi Michelle,
How exciting for the high school to be performing at the Walt Disney World Resorts!
As for
FastPass+, if they are staying at a Walt Disney World Resort, they should be eligible for the FastPass+ in advance. However, this would mean they would need their tickets ahead of time. Often on group trips, the tickets are not issued until the group arrives on-site. You would need to check with the adults in charge of the trip what the procedure will be with tickets.
If the tickets are not issued ahead of time, the students can use FastPass+ in the parks. They would take their tickets to select kiosks in each of the parks and make their FastPass+ selections. Cast members are available at each kiosk location to assist guests.
As for
Memory Maker, this is an additional expense which is up to guests to purchase. Again, you would need to check with the adults in charge what is included in the cost of the trip. If it is not included in the price of the trip, you could always add it on.
Wishing you a magical vacation!
Beth