I have not been able to get a clear answer from the RCCL call center customer service and this information is mysteriously not on the website in the information regarding the free drink coupons. For anyone who has recently been on a RCCL cruise and received free drink coupons based upon loyalty status. The drinks are free but is there an automatic gratuity accessed and added to my account based upon the value of each drink (pre-discount) for each beverage?