Bless your heart.

Warm? Chinos, nice button-down/t-shirt/polo/whatever, Sperrys/Chacos.
Cold? Khakis, nice button-down/shirt & fleece/polo/whatever, Sperrys.

Just dress nice. I mean... It's not hard.

You will look like a fool if you wear anything from American Eagle or Sperrys with socks, so do yourself a favor and soak them in salt water or just get them wet somehow. They will mold to your feet! It just takes getting them wet, so don't be concerned about getting something on them at a party.

Problem solved!