Too Many Toys
I try and remind my wife that she is on vacation, not going out with her friends and family. EVERYONE here will remind you NOT to over pack. There are usually 2 formal nights on a 7 day cruise. Unless you're going to really dress up for them (I'm on vacation-I'm not trying to impress anyone with how well I can clean up), leave most of the stuff home. The cabins have hair dryers, shampoo and conditioner and towels. My wife learned after the first, when she packed the house, and only got half way through the first suitcase. Don't be mean like I was and make her pull the suitcases she brings tho-bad form........