This is probably a dumb question, but how would a specific staff member know whether you were auto-tipping and giving him/her extra, or if they had to turn it in?
Your account number is linked to your cabin number and table assignment. Even your name/cabin is given when you do 'anytime dining'...plug it all into a computer and anyone who served you gets a memo or other notice that you declined the auto pay.
Carnival Spirit 2003 (Caribbean)
Carnival Fascination 2004 (Caribbean)
HAL Noordam 2004 (Norway)
Celebrity Horizon 2005 (Caribbean)
Sun Princess 2006 (Caribbean)
Diamond Princess 2007 (Alaska)
Carnival Splendor 2008 (Mediterranean)