Working on the info from the crew members, you are best removing the tip and give it to your wait staff and steward, the will receive the exact same wage, plus the tip of the passenger
There will be loads to do, that stuff is like a sticky abd sit in the schedule all the time, by the time you sail the schedule will be full of all sorts. Don't worry at all
Yes, we got gifted credit for the Crown grill or Sabatinas, I think it understandble as the officers aren't available on very short cruises. (this was a 4 day)