The island is located in the Hat Chao Mai National Park in the southern province of Trang.
Head of the natinal park Prit Narasaritkul said the survey found that the hotels run by private operators were fully booked during the Songkran Thai New Year holidays in mid-April.
To cater to the increasing number of visitors, the national park has stepped up measures on tourist safety and management of waste and vessels.
Public relation campaign will be promotd to create understanding among tour operators and tourists what they can do and cannot do in the national park.
Tourists can also visit Koh Kradan for a one-day trip, he said. (TNA)
