It is absolutely optional. Since it is Hawaii Pete and Sierra thought they’d take advantage of the sun and beautiful beaches, inviting everyone to join them for a day of fun in the sun!
As of right now outside weddings/ gatherings are limited to < 25 guests. Please know if you are traveling from out of island to check https://www.oneoahu.org and https://travel.hawaii.gov/#/ . This website will have updates about various covid restrictions as they are constantly changing. Please note: Hawaii has recently mandated vaccination cards or a negative Covid test (within 48hours) to enter a majority of businesses.