Cruiseline transfers are not the way to go imho...just waiting for that bus to fill and being hit by everyones carryons as they walk down the aisle, to me was a one time only have to.
Prepaying gratuities, just makes sense. If by chance you do want to reduce them at all, as I found out once, it was easy to do. The blatent disregard of a room steward, years back, warranted, in my mind, a reminder to him of his bad service.
I agree, focus on the great time you will have, not what "may" happen..with every cruise, you will gleen information to use for your next cruise...have a ball!