My husband wore jeans every night, my teen son wore his school uniform shorts to dinner a few times. We were on Noordam for Alaska June 5-12. Even on the second gala night we were sitting facing the reception desk, a man was seated wearing jeans, a hoodie and a baseball cap . . . on gala night. I found the dress code to be much more relaxed. And since it was Alaska and much cooler outside the indoor spaces were not freezing with the AC blasting. The MDR was not nearly as dressy, I typically wore nice jeans, a cute top and a cardigan.