Exceptions are duly noted. The Clothing Progression Choosing appropriate outfits is greatly simplified once one understands the fundamental clothing progression. The progression for the majority of attendees is straightforward. Many will try to wear an open-collared dress shirt on Sunday. Although this is within the spirit of the rules, it is not a strong fashion choice and should be avoided.
Evening wear follows a similar progression, greatly relieving worries when planning and packing.
The key to the night progression is that clothing type should match what is to be worn the following day. Thus, one opts for a sport coat and tie on Friday night, and the polo shirt or dress shirt on Saturday. On Friday night, many men will simply elect to remove their tie and unbutton their top shirt button. Don't make the same mistake. If you must stay in your suit, leave the tie on.