Got the Voodoo box this afternoon. I'm not going crazy with the doughnuts, just sampling here and there, but they're definitely good. Worth the cost? Probably not. But if you're on vacation, this is a unique thing that you can't find in many other places and it's worth the splurge imo.
It being open until midnight is also very smart in the sense that it allows people to buy doughnuts for the next morning. No one wants to run out for breakfast, but if you can buy some donuts, hop on the water taxi, go back to your room, etc and then you'll have them for you in the morning.