Hello im going to Vientiane for a single entry Non O visa based on marriage to a Thai. I will take the documents below please tell me if i need any more or have too much. Thankyou 
 

1. Original Thai marriage certificate & 1x copy 
2. Copy wifes Thai ID card front and back signed & dated x1
3. Copy wifes Tabian bahn signed and dated x1
4. Copy of data page of my passport x1
5. Photographs x2

*Can i download the application form? I have heard of rejected downloaded forms
*Do i need a letter from my wife? 
*Do i need Kor Ror 2? 
*Do i really need to take original Marriage certificate or is just a copy ok? 

Thankyou. 

One to 5 is correct. Plus a copy of your Lao visa/entry stamp.

Download and print 2 sided in color this form. Vientiane visa form.pdf

Letter and Kor Ror 2 is not needed.

Best to have the original marriage certificate in case the ask for it.

Is a multiple non o visa available from Vientiane?

7 minutes ago, WhiteTrash said:

Is a multiple non o visa available from Vientiane?

No They don't issue any multiple entry visas.

Savannakhet will issue one based upon marriage to a Thai.

Ok thanks