Maybe I've been lucky, but twice I've been out on a country cycle ride ---- got chatting to somebody at a site gate, and they've been very happy for me to wander round.
Needs quite a long conversation comparing our respective allotment sites, the right weather, and meeting somebody who's just done summat they're really proud of ;D. Funnily enough, it helps having the kids with me, as they get so much enjoyment out of our plot.
All best - Gavin