I don't think I have ever had to wait for a self checkout, anywhere. There's always more open ones than people waiting for them.I find people are painfully slow at self service checkouts. Sometimes it's faster just to go to a cashier. Last year at Metro, every self serve machine had to be wiped down after every use. The lady working there, took her sweet time slowly cleaning the machines. You go to machine that hasn't been cleaned, she would scream at you.