We did it a couple of years ago. We are a family of 6 and went with our friend and her DD. There were 2 other sets of couples that were separate. So 12 in total. We absolutely loved it and want to do it again. The other couples were nice too and asked many questions as well.
We were at the Brown Derby and the food was outstanding. Our kids were 11 and up and they loved it just as much as us. If you are really Disney fans - you will love it. The Imagineer was very impressed with our 11 year old DS - he asked very detailed questions and some he couldn't answer because Disney hadn't announced some of the items yet. Our Imagineer was Tim and he was excellent - so informative. We all received Disney name tags that were so nice. Our kids still wear them.
You will enjoy it.