I used this site to prepare for a trip to NYC this past weekend. It involved 9 girls flying in from all over the US to celebrate my upcoming marriage. Based on reviews I had read on this site, we made reservations at 'inoteca our first night there and it set a fantastic tone for the rest of the weekend.
The wine steward was phenomenal and extremely accommodating and the waiter was extremely knowledgeable and patient while serving 9 women who hadn't seen each other in quite a while (i.e. chatty and slightly loud).
The best thing I can suggest for large groups of people here is to allow the waiter to pick your dishes. I asked him to pick out 12 - 15 dishes to serve throughout the meal and he did a fabulous job. We all left there comfortably full with great wine in our bellies and the whole bill for all 9 of us was less than $300.
Thanks to all of you who recommended this restaurant. I'll be back in the city in two weeks and will be using this site to find another great place to eat.