Vaccine roll out.

Walking is fine here, you have to wait 15 mins if you are driving and encouraged to come alone.

I expect every centre is different.

Its the same rules at our centre Boss,   the only hold ups seem to be finding a parking space.

Maybe something to do with the actual setup then - lots of car parking, no room for people to wait. They get a chair outside under a roof covering thing. No queuing inside either, we are asked to arrive with less than 10 mins prior to jab. Park up and wait in the queue outside.