The more comfortable the better. When I am down the shore at my son's almost anything goes. It's beach area and the weather dictates what we wear. I'll be going down on the 22nd to prepare to spend Thanksgiving with my boy. We are going back to our old days when it was just us. When his wife was alive, it was always with her family, but not any more. Now it's is our family which consists of just the 2 of us. So, we will not dress up. He usually wears shorts year round inside and a sport shirt and I wear lounge clothing. When I was a kid, we'd always have to dress for dinner. My dad insisted on that, but none of us enforced that with our kids.