The contracts for the crew have changed since the restart. Each employee now works on a salary and it is derived from the ‘crew appreciation’ we all pay, whether it is from the package or paid separately. Bartenders are included in this payroll method. It kept things fair after the restart when some ships had 15% passenger capacity and some were at the full limit. It also keeps it fair when considering a large percentage of passengers on a specific itinerary are not from a tipping culture, as is in the US. Anything extra you give them is theirs to keep but still, many that work in a bar with the same teammates will put it into a communal pot to be shared with their other coworkers.