12 Bad Cruise Habits

Discover 12 habits and things cruisers do on a cruise that annoy other cruise passengers the most. Things I have seen on my many cruises, watch cruise fans discussing on cruising forums and reading complaints about. 12 common practices, habits and things cruise guests do that drive other passengers crazy. Are you guilty of any of these? Do some or all of these drive you crazy? Or, do you not see why they upset other cruise guests?