SATURDAY, SUNDAY: The North Beach Jazz Festival will land in Washington Square Park. Can you dig? And Union Street (from Stockton Street to Columbus Avenue) will be closed from 7:00 a.m., Saturday to 9:00 p.m., Sunday night. The following bus lines will be affected: 9X Bayshore Express, 30 Stockton, 39 Coit,and the 45 Union/Stockton. (Oh! We've never been on the 39 Coit. Is it as adorable as it sounds? Please advise.)