Southeast Asia forum

As Bob says, it's do-able, but there's fair bit of moving around. If I were to give you any advice, I would consider chopping out one destination. For example cut out Hanoi /Halong Bay. Don't get me wrong, I loved Hanoi - but you won't have much time in Hanoi itself: 1.5 days before heading off to Halong Bay, and maybe half to one day when you return, depending on flight time and by the time you phaff around getting to/from airports, checking in/out of hotels, etc. It'll be enough time to get a quick taster but you will be on the move quite a bit. Save costs of flights, airport taxis, visas, etc and look at adding at least one extra day to Phnom Pehn and maybe Siem Reap .

Alternatively, continue with your Hanoi plans but maybe fly direct to Siem Reap cutting out Phnom Penh (you're not there for very long anyhow). Having said that, I'm not sure what flights are available to do that these days.

Or look for other alternatives to cut out one place (depending on where your collective interests lie), and add those days into areas that you are already visiting.

Bottom line, yes it's doable. But it's alot of moving. Take into account the time you will spend getting through the airport, taxi from airport to/from the hotel, checking in at hotel, packing/unpacking, waiting for buses, etc. It's a high portion of what I call 'phaffing around' time - rather than being able to get out and see the countries that you are visiting. When your trip is of a reasonably short duration it's not difficult to keep up the stamina, but I've found that you're whizzing through places without having enough time to appreciate them.

That time of year will be pretty cool or cold in the Hanoi area - Luang Prabang is always nice and much warmer