Are 19A/F the terrible exit seats with about 2" of the seat cushion chopped off, and with no armrest? I don't recall if I was on a 738 or 739, SEA-MSP in an exit row A seat that was sheer misery. I get that DL wants to save exit row legroom for medallions, but that seat was godawful. I had two blankets stuffed in the gap and I still felt like I was going to slide off the 15" wide seat for 3.5 hours.
I wouldn't even want it for sub-2hr MSP-DEN (and yes, DL has mixed a 739 into MSP-DEN schedules. Ugh). To Hawaii? Id rate the seat Y--.