Ours looks empty now with an 'estimate' queue time of 15 mins.
To be fair, when we lived in Bickley, i'd bring a book to read in the car for the wait at Waldo Road on a Saturday morning. Royston (in normal times) is never more than 1 min wait for a parking space. Can't complain.
You have to book a 15 minute slot for ours, seems like a decent system!