Many thanks for the info PD, I'll go ahead and book it for 4pm as I'm staying in soi Chaiyaphun and don't fancy getting off at Jomtien as with the other bus. If the worst comes to the worst, I'll just get one of the yellow/green taxis and cough-up the extra. I used to live in Pats from 97 - 2011 so I have a fair amount of catching up to do, plus old habits die hard!