From my experience there, they assign you to a table. So I agree with Peggy that you'll probably be with other people. However, it never hurts to ask for a single couple seating. If they are sold out,you might get lucky.
They start serving dinner at 6, there are little tables for four at the top and there are theater seats also at the top, but most of them are for the show only not the meal. So most likely you will just have to sit with another group
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