I've searched on this forum and couldn't find anything. Does anybody know? I've fired off a couple of emails to the relevant embassies but still waiting a reply.

Visiting Laos would be via Chong Mek border and entering Cambodia from Laos at Don Khong

Cheers

A Thai National with a passport can enter Laos without a visa, they just pay a 10baht "entry fee". They get the same 30 day entry stamp that a UK or US passport holder has to pay 35 USD for.

Sorry, don't know about Cambodia

I've searched on this forum and couldn't find anything. Does anybody know? I've fired off a couple of emails to the relevant embassies but still waiting a reply.

Visiting Laos would be via Chong Mek border and entering Cambodia from Laos at Don Khong

Cheers

Thailand has arrangements for their folks to cross the border for up to 2 days with a document issued from the local Amphur Office. A travel-agent can sort this out for you. Perhaps you'll need to pre-send a copy of the Thai's ID document to the travel agent - they can then arrange from there.

They may be some restrictions on how far the Thai can travel under these arrangements - you can get this from the travel agent.

See also Qantas' IATA database.

I've travelled across at the Chong Mek border. Thai's don't need a visa to cross into Laos.

Thai's for all intents and purposes need a visa to enter Cambodia .There are usually available on arrival if crossing between the more frequented routes or by air, but at Don Kong (on the Lao-Cambodia border) it will not be possible (border passes as indicated above don't work if you aren't crossing directly from Thailand). So a visa for cambodia will have to be organised in advance from the cambo embassy in Bangkok before you go.

Can anyone help pls?

If I remember rightly, when I took my Thai GF to Cambodia, she didn't have to pay for a visa. I think she did have to take her ID card as well as her passport tho.

Can anyone help pls?

My previous answer should have helped fill in all the gaps. Let me know what you are missing.