Yes, row BB of the orchestra is considered the FIRST row for this production because the stage is built out (I sat on the aisle of row BB when I saw the show last week). The seats designating row AA are still there, but they are partially under the stage. Personally, I think a seat in the orchestra would be best for this show. It's a very intimate production and I found that being close enough to see the actor's facial expressions contributed immensely to the experience (especially for Gordon Joseph Weiss. He's fantastic in the show).
"Mostly, I loved the size of these people's emotions. Nobody has emotions this size anymore. Outsized emotions. Operatic emotions. Kushemski and Vanda are like Tristan and Isolde, they're Paolo and Francesca. Nobody's in total thrall like this anymore. Nobody's overcome by passion like this, or goes through this kind of rage." Thomas, Venus in Fur