New to this site and wanted to throw a topic out there concerning dress/attire/etiquette in first class.

I travel a decent amount for business and pleasure and have been DL Silver for a couple of years and hit GM a couple of months back. I frequently get bumped up to F and was wondering if other first class flyers ever get annoyed by someone who is underdressed? (Not sure if there are any Curb Your Enthusiasm fans out there, but the show touched on this topic a week or two ago)

I'm a younger member of the biz traveler public and work in the snowboard industry, so I'm usually dressed fairly casual, but nice.

Since I'll be traveling a lot this fall and have some F seats confirmed, I would also like to ask if anyone out there has any general etiquette tips for the F cabin?