There are two ferries but the Centre point one is very limited to 4 a day, (before Covid it was one every hour, is a lot closer to Trat, and the Immigation Office. but they leave when on time of their Time table, western toilet, smiling staff, 50% discount membership card 200b pa. Thammachat take ages to load, squeeze/pack in as many as they can to a point you are trapped in your car and only leave when full, only have squat toilet, up a steep flight of stairs. Take a pee bottle is my advise.