So after my 32110% load factor flight a couple on Mondays ago, I just had a completely full Wednesday 320 flight out of PBI. It was so booked that, for the first time ever for me, I couldn't get an extra legroom seat at the 24 hour mark as a Gold. I paid next to nothing when I booked (I recall less than $25), but I could tell from the clientele that the fares got high (at PBI, even afluent people sometimes fly Frontier). Tough aircraft for Frontier to board when people have carryons and the flight is full. They did send me an email a week or two ago offering to swap my carry-on for a checked bag. Obviously not an attractive offer to most. The extended boarding made us late and, for some reason, there was no APU. I thought somebody might pass out in the Florida heat.