We end up with a Carnival Bar Tab around $300. I usually get the DOU card from the Casino, so I can get 5-6 drinks for "free" while gambling in the Casino. We bring our 2 bottles of wine, and usually spend $30 on drinks in Port. Our next cruise has 5 port days, so our total expenditure will be about $450 for the entire cruise. We try to take advantage of the Half Price Wine on Departure Night in the Steakhouse as well 1/2 Price Drinks on Ships that have a Red Frog Pub on Departure day, normally from 1-3pm.