If you go to Cuba, you have to use CUC and that's that, there is no choice.. If I go to a place that indeed gives me a choice, them I decide what I want to do. Not going to listen to a bunch of folks on facebook tell me how to vacation.
I use US dollars, always have . always will. Besides bigger bills for a couple larger purchases, I bring a bunch of one and five dollar bills...This will take care of almost all the purchases I make, from taking route taxis everywhere, to buying cocktails on the beach, or at my bar, food, tipping, everything........and I do not have to hear '' I have no change '''. I also do not have to change over money, and change back if I have leftover, ( of course I never have any leftover !