Tipping on a Cruise. MSC automatically charges gratuities of $12 per person, per day to your onboard account. If you feel this amount needs to be adjusted, whether increased or decreased, arrangements can be made onboard the ship, generally at the end of your cruise.There is no gratuity charge for children under the age of two.f you feel this amount needs to be adjusted, whether increased or decreased, arrangements can be made onboard the ship, generally at the end of your cruise. There is no gratuity charge for children under the age of two.