I bet there are a lot of different answers to this one. Myself, I have to greet the ocean and lay on my raft, first thing, as part of my morning ritual on the first day.
Not including the stuff we do once we immediately arrive -- go to the cambio, check-in, imbibe -- what's the FIRST thing you do on your FIRST morning when the whole day is set in front of you? And do you have a first-day ritual you follow every trip???