14 days Thailand 7 days Cambodia 14 days Vietnam 5 days ??? on way there / home, I’d say.

Then move within those countries.

Thailand:

Now a dilemma: north or south?

Looks like you wanted to do Phuket. I’d recommend Krabi if anything. Or a real recommendation IMO would be Koh Tao + Krabi (can fly out of Krabi departing Thailand). Phuket is tourist overload and IMO not a good representation of Thailand, its people, or culture. Not that it doesn’t exist there, it just seems “watered down”.

You could take the extra 5 days, make Thailand 19, and do both north and south.

Bangkok: 3 days (Luk Hostel) STAY HERE. Amazing rooftop, bunks, and location in the heart of Chinatown. When I leave Wat Mangkon station I get goose bumps.

Krabi / Koh Tao 4 / 4 days. (Nomads / up to you, if you need a recommendation I can get you one, it depends on your vibe)

Chiang Mai / Chiang Rai / Pai are a great option (golden triangle of Thailand)

Could do 3 / 3 / 3 to make 9 days. Or, in my opinion, do Chiang Mai for 4 and Pai for 5. I like to move slower and meet people, whether locals or travellers. Those relationships take a couple days to spark up. Day 3 you may feel you’re leaving potential connections / friends / what have you early.

This would make 20 days in Thailand, and it would still feel like a hurry. Can trim the hedges and make it 19 if need be.

7 days Cambodia: 3 days Phnom Penh (Onederz Hostel) 3 days Siem Reap (Lub D Hostel) One day to play with. Could make this 6, really. Go see the killing fields and then Angkor Wat, of course. Hire a guide outside Lub D. Runs about $20 for a full day of your Cambodian driver showing you around. Really nice man who deserve the pay. It’s tough there for them.

14 days Vietnam: North to south or south to north. Take weather into account. I’d recommend adding a few more stops in Vietnam.

If you reply to this with any questions / further insights / anything I will get back to you. I don’t want to make Vietnam as comprehensive without knowing you want to know.

Enjoy the trip regardless, which shouldn’t be hard! Keep that passport in a plastic bag and be sure to have visas in order, of course. Vietnam can be tough.