We had 14 adults and a baby at the bookgroup and 13+baby went out to dinner at Longhorn Steakhouse where they were amazingly incompetent. I've been there before with fewer people and without this kind of problems, but you do think they would be able to ramp up to that number. We eat at other restaurants with around a dozen people without so many problems.
First, they made us a stuck-together table with 13 chairs and no babyseat thing. They said we could wait longer or break up. Then a very nice couple (where the man was on a scooter and had a partial left hand) offered to move to the next empty table so we could have theirs, and it was us who did most of the moving and setting up (and vigorous thanking). Then they had problems with the idea of separate checks (actually five, total). It took 30 minutes to bring drinks and another 30 minutes to bring food. We had two waiters, one for each side of the table, and one was about 10-15 minutes earlier on most things than the others.
Then the manager showed up and told us that the computer had crashed and didn't have our orders. She did distribute large plates of desserts on the house, which ameliorated the problems a bit, but then it took another 30 minutes for the checks. So we were there 2.5 hours and had exceeding bad service.
Now, the good thing now is that my friend AJ is having a fabulous jewely clearance on her site!