I've seen a lot of people seriously ragging on honeymoon registries, and the common thinking seems to be that they are extremely tacky and rude. I can't understand why. What difference does it make if they register for a set of wine glasses or a bath mat or tickets to a play or scuba diving lessons? I get that some registries are just general cash registries, which I agree is going too far, but if you're asking for events or activities that the couple will enjoy together, what's wrong with that? In a lot of cases I'd rather buy people a life experience that I know they will remember and appreciate than flood them with more material possessions.