Hello Everyone

Need advice,

I have renewed my old passport and will be receiving it 6 weeks from now.

I also plan to do visa-run at Cambodia and extend it using my old passport.

I will be applying for a Non-O (dependent - wife not thai legally working in Thailand)

and my problem is;

Scenario 1

- should i extend my visa-exempt (Cambodia) from old passport to new passport?

(letter from my wife's company will then use my new passport number)

Scenario 2

- extend my visa-exempt (from Cambodia) using old passport (then pick up my new passport) and i can just go to Nong Khai Border then present both old and new passport so they will stamp exit on my new passport? and from Laos Consulate i will use my new passport to apply for Non-O (dependent)

(should my letter reflect the old passport number or new passport number?)

i am very confuse hope someone could enlighten me regarding which is the best choice or maybe you have any suggestions guys.

Thank you