A multitude of drop-points on 3 sides and poor signage probably means that a newcomer will have to make 2 laps to find the correct drop-point.
Even when familiar, you will probably need to move from parking area 1 to 2 to 3 so 3 parking (and queuing) stops are needed.
Never assume you can drop an box of assorted junk into a skip. the eagle-eyed staff will spot plastic, metal and wood junk and insist it is properly deposited, even if only tiny.
A better plan is to bring assorted junk in a bin-liner and dump it in the black bin-liner skip. read more