Lomprayah ticket office is located at Mae Haad Pier. When you enter the pier area you will see a big Bon voyage sign in front of you. Continue walking about a 100 meters to your right and you will see a wooden office with a green roof and a big Lomprayah sign above the entrance. There you will find the friendly staff who will show you the way to the ferry.
KP Tripadvisor also uses Lomprayah ticket counter.
Endereço: Lomprayah Koh Tao Office (Maehaad Pier), Ko Tao, Ko Pha-ngan District, Surat Thani, Thailand