Even if they can get more airlift to Little Cayman - not that I really want to arrive and depart there in the same window as all 80 or eventually 110 people - there is still GCM to contend with. We just left GCM Monday noonish, and the new departure lounge got pretty full. The way they're building on the island, I wonder if that new airport will be over capacity before it's actually finished. GCM aside, we prefer traveling off times anywhere we can even on the US side - more likely to get upgrades or at least not be on a packed plane by avoiding weekends.
Caribbean trips for us, a week is too short and 2 weeks is too long. We tend to do 10-12 nights, maybe all one place, maybe split between 2 spots. We may be outliers but this allows none of what we prefer. Oh well.
There are other models they could follow. Even timeshares that rent mainly on a week basis usually seem to have staggered start dates such as Fri, Sat, or Sun to choose from. Some resorts have a midweek option, which allows them to timeblock better while giving people the options of 3/4/7/10/11 nights.