I’ve just returned from Chaengwattana immigration having completed my latest ninety day checkin. By pure coincidence my next checkin date is 6th June, the very day I’m booked on a flight back to UK. I will return August/September. Do I leave on 6th without doing a checkin, or, should I do a checkin a couple of days before my departure. I don’t want to jeopardise my current extension of stay in any way. I do have multiple re-entry permits, so no problem there.