I’ve not done anything for a month+ , but the only tip longer than 2 hrs I can remember was Tesco Thurrock at 2 hrs 30 ( though they were informed by co I was being pulled out at 19.30 ) , Lidl ( Southampton , Exeter , p/ bro, Bristol ) , full loads & gone within a hour / two , Asda, Morrison’s the same
As it always has been , no different I can remember , cash & carry’s can be a pain if you get there the wrong time
Nb the ones who are there 4/5 hrs are more than likely fast asleep for a hour 0r two after they’ve got a green light / tipped , but that’s Tesco,s fault apparently !!