Hi there, Stacy!
There are only three ways to purchase the
Disney Dining Plan:
1 - to have booked a full package from The Walt Disney Travel Company, including accommodations and Magic Your Way tickets;
2 - to have booked an Annual Passholder room (since there is no need to purchase tickets)
3 - to have booked a stay using Disney Vacation Club membership points.
Since the Youth Education Series are discounted and not sold as part of the Magic Your Way package, that type of trip is not eligible to purchase the dining plan.
The YES classes are wonderful; have a fantastic - and educational! - time!
See you later, celebrator,
-Deborah B.