Do the tickets look different? I very rarely by my own train tickets. When traveling from Trang, we usually give money to whomever from the village will be up in Trang City running errands and they buy my ticket. (we usually by them a day or two ahead). Often I get the ชาย ticket -- if that is who bought it, but no one seems to notice, and there is no difference. ...so unless the Farang tickets are obviously different, I bet we could still get by at Thai price.