Coming and Going- Dilemma

I usually do at least one run into Crickhowell during the festival to pick up some beer and snacks and generally to support local businesses. 

I know they're encouraging people not to leave the site unnecessarily but at the same time I want to support some of my favourite local shops. Any thoughts on the right thing to do?

I don't think it's an issue so long as people respect mask wearing etc in shops etc. Those of us staying off-site have no alternative anyway.