We just got off the Emerald Princess on March 5th after a 10 day cruise. We brought on a 12 pack of water and when we were in St. Thomas, brought on a 6-pack of beer with no problem. We usually buy the water in Florida before we sail. Two other ladies we met on two cruises do the samething, but buy Pepsi for their room. You shouldn't have a problem, I don't think that would like two cases of soda but 6-10 bottles should be OK.