Thailand's forest dept doubles its take from visitsListen to this articleTourists visit Koh Khai in Tarutao National Park in Satun in February. The topmost visited park is Khao Yai National Park, followed by Hat Noppharat Thara-Mu Koh Phi Phi National Park, Khao Laem Ya-Mu Koh Samet National Park, Inthanon National Park in Chiang Mai, and Khao Khitchakut National Park in Chanthaburi. The DNP will also allow travellers to book accommodation inside national parks 60 days in advance, instead of the current 30 days. It will provide online tickets to six popular parks: Khao Yai National Park, Inthanon National Park, Ao Phangnga National Park, Mu Koh Similan National Park, Hat Noppharat Thara-Mu Koh Phi Phi National Park, and Erawan National Park in Kanchanaburi. The e-ticket sales system for all national parks would be ready within the next two years, he added.