FILE - The Waldos, from left, Mark Gravitch, Larry Schwartz, Dave Reddix, Jeffrey Noel and Steve Capper sit on a wall they used to frequent at San Rafael High School in San Rafael, Calif., April 13, 2018. Marijuana advocates are gearing up for Saturday, April 20, 2024. Known as 4/20, marijuana's high holiday is marked by large crowds gathering in parks, at festivals and on college campuses to smoke together. (AP Photo/Eric Risberg, File)