Just how a site should operate. Wish someone would explain that to the cretins who organise tips in my neck of the woods!
In Gloucester they even put the labels telling you which skip is which facing away from the incoming vehicles! Unimaginable incompetence (and you are not allowed to wait, or...
Booking required here since April/May. Always been a nightmare (huge queues - getting through in less than 45 minutes was a good day) but it was great at first with appointments. Later though they obviously decided to increase the number of bookings accepted for each time slot - back to 45...