The must-go long-tail boat trip to Lanta Island confirmed the order very quickly. On the same day, many foreigners joined the boat and participated in the trip. We went to several snorkeling spots and the Emerald Cave (very special, I heard it was a treasure trove of pirates in the past). We had lunch. The things on the boat are average and acceptable. The boatman on the boat doesn't speak English very well, but he is very nice and helped us take photos. Overall, it is worth going.