Hi there, Geraldine!
Thanks so much for stopping by the Moms Panel with this great question!
With any of the Character Meals, I typically plan on being in the restaurant for at least an hour if not 90-minutes. You want to be sure to allow enough time for all of the Characters to have a chance to stop by your table for photos and to sign autographs. Also, your kiddos might decide to interact a little longer with one or two of them and I'd hate for you to have to cut that short to get to another reservation. Sometimes those unexpected interactions where kids instantly fall in love with a Character are so magical.
Another important note, your Advanced Dining Reservation at 8:15 a.m. does not necessarily mean that you will be seated right at that time. It just means that when you check in, you will be seated as soon as the next table suitable for your party size comes open. Even if you were seated immediately at 8:15 a.m. when you checked in, I don't think you'd have enough time to fully enjoy your Character Meal at The Crystal Palace and then you'd still need to walk over to Cinderella Castle to check in for your
Bibbidi Bobbidi Boutique reservation. It's only about a 5-minute walk, but sometimes you have to walk around the Castle instead of underneath it because the walkway could be closed for various shows.
I think you would be safer to make your Bibbidi Bobbidi Boutique reservation for around 10:00 a.m. This way, you won't have to rush through breakfast or your walk. You may even get to see the morning Trolley Show during your walk back to the Castle!
I sure hope this helps! Please let us know if we can help with any other questions you have.
Wishing you and your family a Pixie Dusted vacation!
~Jackie