76L "High-J" Polaris/PE configuration. The first four rows after Polaris are 2-2-2 PE; the rest of the blue seats are normal E+. Given the seatmap, they are probably going to fly it that way, but there is only one frame (N666UA) thus configured so there is always significant risk. There is a lav in the middle row rows 17-18 on the 76L (believe the door faces aft?).