On our 13-year-old's birthday trip in January, we did the Ohana Best Friends Breakfast and Donald's Safari Breakfast, as well as dinners at Chef Mickeys, Crystal Palace, and 1900 Park Fare. All of them were a hit

(and we didn't have any younger children travelling in our party).
Favourite overall was Ohana. Amazing character interaction, excellent service, and a truly great atmosphere.
Favourite dinner was Crystal Palace. The Pooh characters are classic, and interacted very well with the crowd. This restaurant is suitable for every age from newborn to 99, and the buffet offerings were yummy

.
Chef Mickeys, IMO, appeals to EVERY age as well, so that's always a good choice too.
1900 Park Fare was a good choice for the antics alone....those stepsisters can be just hilarious! And despite the fact that Cinderella's there, we didn't feel awkward dining without a little princess of our own. In fact, Drizella, Anatastia and Lady Tremaine went out of their way to interact with our DS (even trying to "set him up" with one of the very eligible batchelorette stepsisters

).