There was a ferry, but it was not sent, although the time was on schedule, they took it to the sleeping board at a very inflated price of 400 b per person, even from the age of 2.
We were there with my daughter in February 2024. The road from Pattaya takes 30 minutes by ferry for 30 baht. See the schedule, but keep in mind that the last one departs from the island around 18. The food there is expensive. There you can rent a bike for 300 baht or Sangteo, in my opinion, 30 or 40 baht. The water there is cleaner than in Pattaya, the sun beds are clearly paid 100 baht. There is not much place to walk there