My husband sounds like yours. When we went on the Conquest year before last. At night he wore Dockers and a nice polo shirt. He took a sport coat and nice dress slacks, tie and dress shoes for formal night but we ended up not going. We saw a lot of guys on formal night with a sport coat and dress slacks some didn't even have a tie on, but the ones with no tie were in the minority. During the day he lived in his shorts and polos and his tennis shoes. We are cruising again this summer and will pretty much pack the same for this trip for him.