Earlier this year, Mrs Fieldhaven and I became National Trust members. Since then we've visited several NT sites, at each site we scan our membership cards for entry or for parking. Then a few days later their system emails us a "thank you for visiting $place" email.

This got me wondering what would happen if we planned a route to visit many NT sites in one a day. Would we get one email, or one for each site, or would it send a "Come on, you're just taking the piss now" email. It's tempting...