I talked to someone on the lift yesterday that parked in lot #1 at 10:30AM! Normally lot #1 fills up by about 8:30-8:45AM.
Wa is mostly family skiers so cold, wind, snow, rain, etc. are good times to beat the crowds as parents won't bring their kids. Also evenings during vacation time it's dead. Families come during the day and there's no school group in the late afternoon and early evening.