I read elsewhere that sometimes they will have a second Chef's Table if the demand is there. Not sure they would do that on a 6 day, though. One person tried splitting his group up into 2 groups, but never heard back with confirmation. Another woman had to go by herself, because there were already 11 people signed up, so no room for her husband.
Also, in case it matters, you don't get to choose your wine. They serve one red and one white, their choice.