Keep in mind, Rentboy, there are footlights - which more-than-likely add to the obstruction. From what I understand they've added a Row BB to the Center Orchestra (whereas, during the previous productions at the St. James), Center Orchestra would BEGIN at Row A. It depends on the house (and) how the actual 'design' is set-up - in order to truly understand (and) later appreciate a production on the whole.
Nevertheless, with all of that said and out of the way, I wish you a splendid evening of Ms. LuPone's finest work (I hope, I hope, I hope!) - By the by, I AM VERY MUCH EXCITED!