I was curious to find out what monetary amounts are appropriate for tipping the staff (stewards, waiters, etc.) onboard ship. Is there a standard amount from which you can either decrease or increase according to quality of service? I've cruised on HAL in the past and their policy or, should I say, nonpolicy of tipping has always confused me. I enjoy giving tips for good service and I'm thinking of following Tom and Mary Milano's advice about pre-tipping.