I decided to book a tour to Ayutthaya today and will leave theme parks to visiting Hong Kong Disneyland. I have two days left after today. May try to book tours to Kanchanburi (sp) / Erawan NP and Khao Yai; though I’m still not certain Khao Yai is doable in a day. But I’d really like to visit the mountains somewhere in Thailand before I depart.