I always use the 'Plaza' stop. I think the 'MHQ' one is towards the hotel. Getting off the bus is obvious, you know when you're at the gates, but when it comes to leaving, just make sure you're there early. The buses can get very busy.
I'll be getting the bus from Uttoxeter that morning too, so depending on which bus you're aiming for we might end up being on the same one!