Cambodia, Laos and Vietnam

Travellers often don't realize you need a visa for Vietnam. Try to get it early, if not you can pay for corrupt officials to expedite your application but it's often a few hundred USD.

It can be a headache to get to train street in Hanoi, keep trying. Theirs always a cop looking away if you pick your moment.

Spend a few days in Siem Reap (Angkor Wat) Theirs an insane amount to see so take it slow.

Checkout 'Katze' in Hanoi, no spoilers (Unless you watch the video).

You can probably skip Cat Ba island as they've filled the bay in to be replaced with a mall.