We go on board armed with cash made up of different currencies and denominations so that when a staff member does something "over and above" we can reward him or her; for instance, when we docked in Funjal in April we gave our cabin attendant some euros to go ashore. He could spend it if he wished and we were happy to have given it. We pay the required gratuities that are part of the package and never, ever offer/admit any additional tips to Reception.