For Hawaii
Honeymoon - being a cliché in Hawaii, too many to count. Happens 1-5 times per lifetime for the 85-91% of the population that may or does get married. I would venture a guess that any given nice hotel in Hawaii always has at least a dozen Honeymooners, and that is probably a low estimate at that.
Anniversary - not quite as special since it happens 1-50 times per lifetime for those who got married.
Birthday - even less special since it happens to everyone on an average of 70 times.

OK I rounded and guessed on most of the numbers used above

I would also guess that more than half the guests at any nice Hawaiian hotel are celebrating come kind of special occasion. Just a guess.