I have two UK passports and in one i have my Yearly Non O based on being married to a Thai from Savannaket. I will go back to get another visa in a few months but want to ask; I have one passport with 8 pages left and by the time i go to get the new visa, i will have about two pages left. Can i cross into Laos with the passport almost full, get the Laos sticker in one passport and then submit my new passport for the Thai Consulate to issue my new visa? Do i need to give them both passports?