The point is that the cruise lines stay docked in Bermuda for a few days because the island is so isolated - so they dont have a chance to open the casino.
The only change is that the ship will be able to open the casino while in port.
Call me strange, but I find it a little hard to get excited about these issues
I don't gamble that much on cruise ships anyway, and you probably notice most people who cruise don't care about the casinos that much, either (some do).
I would guess every cruise has maybe 30 avid gamblers - and the rest of the casino has people just wasting a little time (and it is a waste of time unless you play a table game - the odds on the cruise ship slots are terrible). So most people wouldn't care if the casino is open, but the ship cares, because it wants those casual gamblers to walk in and drop $50.