Every time I've used it for EDF they've loaded one bus at a time with 2 or 3 just sitting empty. On Monday, they were loading 2 together at one point but again, much of the time, there were others sitting empty with the doors closed. It'd surely be quicker too. I remember at Southampton they had...
I think there's a lot of truth in this. I've always thought the post-match P&R set up is weird though. Surely it would be better to take Southampton's approach - load up several buses at once as they're all siting there, ready and waiting. Then let them leave together. People may have to wait...