I copied this from another site to remain nameless(Thanks Barb)
This is per person,not per staeroom
Position----------------------------3 day 4 day 7 day
Resturant Server-----------------$11.00 $14.75 $25.75
Resturant Assistant Server------ $8.00 $10.75 $18.75
Head Server ----------------------$2.75 $3.75 $6.50
Stateroom Host(ess) ------------$10.75 $14.50 $25.25
Room Service At your discretion At your discretion At your disrection
For room service, you will want to tip a couple of dollars, or more depending on the size of your order. If you order drinks, a gratuity is automatically added. I add a bit more for exceptional service, like if they bring me my drink on the beach on
Castaway Cay. You will also want to tip the porters a dollar or two per bag, especially if they carry your bags all the way across the street to the parking lot.
ADDITIONAL HINTS FOR TIPPING
Charge your tips early. The line can get quite crowded at Guest Services if you wait till the last day of your cruise. We tip the recommended amount early and then add some extra cash for anyone who gives us exceptional service.
Be creative. In addition to tips, little items such as phone cards are appreciated. This should be given in addition to the suggested cash amount, not in place of it. We pick up a batch of phone cards at Sam's Club prior to our cruises. They also make a nice thank-you for persons in positions that aren't traditionally tipped, such as kids counselors, cruise staff and guest services. I bring a supply, of thank-you cards, too, and insert the little gift. Another fun item is Florida lottery tickets, which can be purchased at the airport or at gas stations, grocery stores, and convenience stores.