Sorry, been out shopping. Basically what jsabine says, it's a free control so any receipt that has location / date / time is acceptable as per the rules. The route sheet (which is only a recommendation after all) guides you to the recommended one, the Mace, but if you fancy getting your hair cut, buying some flowers or just getting pissed, I'll take that. If Mayfield has been completely decimated by hungry cyclists, just carry on and get a receipt in the next village, Rotherfield.