Papa Bill and Grandma Mrs Bill have medical permission slips on file at the Grandchildrens day care facilities just in case we are the first ones contacted in an emergency ,so that little item is always on my mind.
For that matter, if your step son has a different last name than yours, you should have
something in writing establishing your right to make those decisions even domestically
Enjoy your cruise . sounds like you will be having a nice family vacation..