I was on the Norweigan Sky last July. LOVED freestyle dining! Great for days in port. While we did have formal nights, the other nights I wore either a business-style pantsuit or slacks, sweater & blazer. We were in Alaska - at times I would simply come in from port, change my jeans to slacks, leave my sweater on & throw on a blazer, & go to dinner. I was never underdressed.