SDF_Traveler-
I was on a 32R flight FLL-MSP on Dec. 26th, and had also been a bit intrigued that the equipment type listing was not hyperlinked on nwa.com. I was in F, so I didn't make a close examination of the back, but it looked pretty much the same as 'regular' 320s. In F, the main differences I noted (related to the posting quoted below) were that all the F seats had in-armrest tray tables, not just row 1, and there were no footrests. I must admit that I did not think to look for life vest signs or unique sinks!
Originally Posted by bergamini
The seats in row 1 of the A320 have the tray tables in the armrest. However, that's the same on the A319 or any other Northwest plane where the tray tables are normally otherwise in the seatback. Since there is no seat in front of row 1, there is no seatback to have a tray table.