Is it bad form for my fiance and I to have a "registry" for our honeymoon cruise? - honeymoon cruise registry

Basically, customers can call and money for our honeymoon. We must now everythong the creation of our new house (kitchen utensils, bedding, etc.), and both are in school and work full time, but money is still for all our extra costs in the vicinity of the marriage. Both have money for the trip (non-traditional, I know), but we are still worried it will not be enough.