For the annual Conference of Northern California Weavers, held in San Mateo this year, registration closes on May 1, 2022.
http://cnch2022.com/
To reserve a room at the Conference rate, hotel reservations have to be made by April 21, 2022.
https://www.marriott.com/event-reservations/reservation-link.mi?id=1611374234826&key=GRP&app=resvlink