No... It's kinda like a cruise, ain't it?
@traxla:
You are expected to tip on cruises, an average of $10 per person, per day. On most cruiselines, they automatically charge you that amount, unless you complain, and then they may remove it.
Usually, we would end up giving our room steward and waitstaff an additional amount if they were really good, and on most of the cruises I have been on, they have been. On our last cruise, we really liked our Croatian waiter, Alex, and our party gave him an extra $100 at the end.
Last time we stayed at an all inclusive resort in Cozumel, we tipped the bartenders, and wait-staff at the non-buffet restaurants.