What’s open and what’s closed today for Martin Luther King Jr. Day: • MAIL: The Vancouver Main Post Office, 2700 Caples Road, is open from 10 a.m. to 2 p.m. today. No home delivery except Express Mail. • GARBAGE: Waste Connections, in Vancouver and most of Clark County, is expected to be on its regular schedule; check www.wcnorthwest.com for possible updates.