I use the Letter Carrier. Good service too! I go on weekdays and I have Nexus card. So I don't usually "line up". But on the way back, it's usually about 20 mins line up.
Never heard of this...and I dare not to try...
If you come back at the right time...lineup to Canada is not an issue....
I usually go to Point Roberts to pickup stuff during my lunch hour.. usually about 20 mins line up back to Canada.
When I go to US for shopping....I usually come back after dinner....so by the time I arrived border it's already 10-ish... It's usually short lineup.... And Nexus is already closed too (truck crossing).