Do it yourself - when I did it (UK license) no translation needed (nor an International) you will need a proof of residence from immigration and unless you pay (at Korat at least) you have to wait 10 days for the free one so factor that in, also a medical letter (I think that's valid for 1 month) I did one for each but was also told one would have been enoughI don't know what they do with the UK license now but I kept mine.