Weve never stayed in a Cat 2, but the last several times in the Walt Disney Suite, we tipped $75 per person/per crew member per day. While on the other ship, we were in the Roy Disney Suite and found the service a bit less inclusive (I guess we were just spoiled by the attention the first several timeseven our worn items were folded and prepared for hand laundering. Further, they would come and fluff our pillows every few hours during the night and while in the Roy they only came twice a night. My DS was also disappointed that in the Roy, they didnt fold the individual toilet paper folds into origami animals but during the morning, mid-day, and evening keepings. On the Walt, it was between uses of each family member.) and only tipped about $60 per person/per crew member per day.
Hope this helps!