Hi Douglas!
To make a dining reservation for a group of 11, visit the
Walt Disney World Website on the morning of your 60-day mark. You can either make an advanced dining reservation for all 11 people on one reservation or you can break it up into two parties. I took a look on the Walt Disney World website and there are plenty of reservations available for a party of 11, so you shouldn't have any problem, as long as you make them on your 60-day mark.
If you need to break the party up into two, don't worry, once you arrive at the restaurant, they will do their best to seat you together or at tables near each other.
Another option is to call (407) 939-7529 and have your restaurants and desired times ready and written down. A Cast Member can then help you get everything booked. I hope you have a magical vacation!
Thank you for bringing your question to
planDisney!
Magically,
Stacy