Hello,
I think I have used the English lawyer referenced above and the retainer comes much cheaper for a couple, as you seem to be because the "we" in your post implies so. Colonia Man is correct that the disbursements add up especially if your case is complicated (many countries in ýour background). But you will need translations no matter where you go and they have to be donme by Uruguayan translators.Â
If you do not want to take a chance on the law office there is the option of securing the services of Rosamee Walter. She is indeed cheaper and yet you will get exceptional service, that is very competent and very friendly and personal. She can help you with many other things too. She speaks 5 of the languages you do, not your mother tongue though ...
Good luck!
Armin