When I write set in modern day Britain, I’m careful about the settings.
The Red Lion is a real pub, with a real well inside it, and (according to my researcher) good food and great beer (Avebury Well Water was an awesome bitter by his report).
Avebury itself is full of tourists this time of year (the Equinox well past). Tourists, sheep, and stones.
There wasn’t a guided tour at the long barrow – the kind of thing Roland did for fun and spare cash – though my researcher passed one on the way back to the car.