I don't understand the comment either. How often are Miami or Turks below 65f? But warmer air is less dense anyway. So maybe the aircraft will always be less packed.

Warren S/V Scuba Doo
Lagoon 50 (winner of best crewed yacht under 55 feet at the St. Thomas crewed yacht boat show).

https://www.cyabrochure.com/ebn/2307/pdyrX/6642/4///