Wellll...., I'd bring the plug-in, don't know if it was our location, mid-deck six, but the toilet was pretty stinky the first day, due to the flushing of the system in port, thought I would not be able to stand the toilet for the rest of the cruise. The water out of the faucet was pretty rusty at first, but fine later. The smell in the toilet also was gone within a day. But, if you are like us: generate a lot of dirty, stinky laundry, including wet suits, beach sand and snorkel gear that starts to ferment, Tevas that reek, etc., then, bring the plug-in. We had seven people, two connecting rooms. One room had a great rose vase supplied by Shirley and her wonderful helpers at The Perfect Gift, our room did not, and trust me, the roses REALLY helped in that room. Our room was, well, pretty ripe by the end.