Thanks, IflyinWY. I would totally have missed this thread because it's in the P1 section.
Myanmar - Here's a quick field report on Myanmar. Every bag is x-rayed upon arrival and drones are confiscated. I've seen at least 4 confiscated drones in the Yangon International Airport Customs office. There are more in warehouses near the airport. Your bags will be x-rayed again when you fly from Yangon and when you land at Nyaung U. Every flight you make within Myanmar, your bags will x-rayed on departure and arrival. If your drone is found, it will be confiscated. Think twice about the risk.
I entered the country with an invitation and official approval to bring my drone. Approvals came from the Ministry of Tourism, Ministry of Culture, Ministry of Information and the military Security Council. A paperwork deficiency resulted in it being held by the Customs Department for a 24+ hours while the ministries got their paperwork straightened out, totally skewing my scheduled guides, hired cars, hotel rooms, etc. The government assigned a guide to me. I was responsible for his expenses.
Another concern. You'll undoubtedly fly on ATR72s on internal flights. My backpack fits under the seat and definitely not in the tiny overhead. Anything larger would have to be checked-in.
Laos - Entry: no issues bringing the Phantom into Vientiane last year and Luang Prabang this year. Flying: Vientiane is very permissive but Luang Prabang is very paranoid. They're hyper-sensitive about LPB being a UNESCO World Heritage City and the Tourism Police may detain you like they did me. Be careful where you fly, especially at temples.
http://www.phantompilots.com/thread...-my-passport-to-the-lao-tourism-police.45254/
Airlines servicing Laos use either A320s or ATR72s. In the jet, you're fine. In the turbo-prop ATR72, your drone will not fit in the overhead. It might fit under the seat.
Vietnam - very permissive. I think I could bring a flying chainsaw and they'd be ok with it.
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No experience with Cambodia or China. I've read Cambodia has banned drones over Phnom Penh and permission is required over the Angkor Wat Archaeological Zone.
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Read this thread through to the end or search for your country within. It has not been maintained but you may find relevant info.
http://www.phantompilots.com/thread...-take-your-drone-with-you-even-tourist.23392/
Finally, a lecture: Please post in the correct category. The issues you're asking about are NOT Phantom 1 issues but General issues. Post your questions where they belong and you'll get better answers, as well as avoid duplication.
I genuinely hope this is helpful. Please feel free to PM me or ask questions here in this thread.
Mods, please move this thread to General Discussion.