What's so unusual about dressing nicely for a wedding?
Nothing wrong with it, bur I don't see young guys in a dress shirt and tie often. Especially a plain white shirt. The rolled up sleeves give the impression of short sleeves, which would be very Mormon.
Where I'm from -- New Jersey -- it's quite acceptable to get as wild drunk as you want to be. But you have to do it with respectful attire. One of my best party pictures ever was taken at a wedding. I look smashed, but still absolutely terrific in that tie.