My crew briefing includes establishing that we are a boat and we must take or make anything that we need. If you want to take a 30 minutes shower, we will have to spend twice that time finding and loading water, thus cutting into your vacation time - your choice. Also, do not dribble your personal stuff around - it's called consideration while living in a cramped space. If your crew cannot abide with simple courtesies, they will not be your friends by the end of the trip. Don't ask me how I know.

Regarding safety of the boat and crew, as Skipper, both are YOUR responsibilities. Ergo, if you think that a late night dingy run in a squall is a bad idea, it does not happen.