I'm well aware of that. When you sail with carnival you have 2 options... put it on your sign and sail or put it on your final invoice and pay it when you make your final cruise payment that way it is not on your onboard account. When it's on your final invoice you do not have the option of adjusting the amount whereas if it's on your onboard account you do.
We just got off the Sun Princess, we opted to have them remove the pre paid tipping (which is $10.00 a day per person) and we tipped the individuals who we thought deserved a tip. It seems to us and quite a few others that the service isn't what it use to be since pre-paid tipping was automatic put on your account. So to answer your question, it is put on your account daily for the wait staff and your room steward. You have the option of going to the pursers desk and telling them to take it off (which they do without a fuss) and paying the crew at the end of your cruise.
At the end of the cruise can you add to or subtract from the total amount of the tips? I.E.
If the service wasn't great could you pay less then 10$ a day or if it was way above and beyond could we add more money on?
Aly you can go to the Purser's Desk and have the amount adjusted. You can't however wait until last minute, it has to be done before you get your final invoice. We remove the automatic tipping from our account, use the ships amounts as a guideline and tip more for exceptional service and less if the service is lacking, we pay in cash, in person using the envelopes that the ship provides.
So, If I go see the purser first thing I get on the ship I can tell them to not hit my account for the $10 a day PP? I'd rather tip whoever, whenever and whatever I want. I personally don't think the head waiter is worth a tip but I want the cabin attendant, waiters, bus boys, and deck attendants to get extra, on-going tips from me personally.
It always bothers me when I hear that people removed the automatic tip so that they could reward the people who they feel gave them excellent service. Do they know that all the cash tips that are received by staff must be turned in and that they go into the pool...exactly the same as if you leave the auto tips in place. If you really want to make the staff that has served you well happy then tip over and above the auto tip. The staff will still have to declare that they received a cash tip from you but if you have left the auto tips in place they will be able to keep the "extra" !
I have not noticed any appreciable difference in service since auto tips have been added to my onboard account. Those changes that I have notices seem more directly related to cut backs by the cruise line rather than attitude of the staff. (eg. waiters that have more tables and therefore more passengers to take care of in the dining room leaving less time for each passenger). If word gets out that passengers are tipping "extra" for excellent service it seems to me that all the staff would be really working hard so they could capture one of those "extra" tips.