The cruise line (Carnival and others ) will add $10 per person per day as a tip to your cabin account. This money is divided among the cabin steward, waiters, and Lido food service workers by a set formula. Basically if you pre pay you just give them this money at the time you pay for your cruise instead of when you settle your cabin account. Everyone pays the same unless you go to the Pursers Desk and make an adjustment because of poor service. The method used to pay this tip money is likely transparant to the staff. These added or pre-paid tips are the minimum recommended amount. If you think someone has provided exceptional service then you are free to give them a cash gratuity that will be in addition to the money that is pre-paid or applied to your cabin bill. The exception is the Maitre'd. If you choose to tip him/her there is an envelope provided to give a gratuity on the last night of the cruise.
8 Norwegian: Sky, Jewel, Dawn, Epic, Pearl, Breakaway, Getaway, Escape
10 Windjammer: S/V Legacy X3, S/V Polynesia, S/V Caledonia, S/V Diamant, S/V Sagitta X2 S/V Mandalay, S/V Vela