In my experience, when the resort says that "gratuities are included", what they really mean is "don't worry that you're going to be judged for not tipping". Unless what I've heard about the wages paid to the resort staff is completely fabricated, there is no way that gratuities are actually included. They're just giving you permission to not tip. And that's totally okay, culture wise. But if you are concerned about the people who are serving you getting a tip for it, don't assume that they are receiving one from what you've already paid. When DH and I were in Mexico recently, we tipped a dollar for breakfast and lunch, five dollars for dinner, a dollar to the bartenders each night we were in the lounge, and ten dollars to the lady who cleaned our room.