The pre paid service charges does cover the restaurant staff, stateroom stewards and behind-the-scenes support staff are compensated by a combination of salary and incentive programs that your service charge supports, however there would be an added gratuity for drink purchases and spa treatments. When it comes to room service it is a nice gesture to provide a small tip to that particular person but its not required.
Gratuities will be added to your bills if you purchase any bar drinks (soda included) as well as if you use the spa, tips are added onto those bills.
If you purchase an alcohol or soda package, those gratuities are added to the package you purchase.
If you use room service, it is customary to offer those individuals a small tip, but it is not required and this is usually a cash tip.
You're pre-paid gratuity package includes your stateroom attendant, all your wait staff in the dining rooms, and a few other behind the scenes folks.
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