The Dress Code at the host course is nuts.
9 insanely strict dress code rules enforced at the Olympic golf venue
The dress code at Olympic golf host Kasumigaseki CC is no joke: Blazers upon arrival, please. No loud colors. Shorts are OK, but...
golf.com
Shorts are forbidden upon arrival at Kasumigaseki, and may only be worn during play if they are paired with knee-high socks. If your shorts have a built-in underwear liner, they are also forbidden.