Table seats are not for sale, nor can you just get there early and sit there. The first row that is a bench is available though. The table seats are reserved for people with tours. If there is no tour, theater hosts randomly select people from the audience to place there.
The best way to get the table seats is ask a theater host. Sometimes they will tell you they are just reserved, other times they may ask if you have four people or less and give you the seats. They are supposed to save the table seats and try to pick people who have never been to the show and put them there, but if you ask they are very nice about it.