First time I read someone is able to withdraw USDs from a Citibank ATM in Argentina (using a foreign card). (??)
Your best solution, as it has been mentioned, is to open a bank account in USD in Uruguay and you're done. That takes one hour & you exit the bank with a Maestro card & your account configured.
What you'll need:
- Two IDs with photo, with a valid date
- A proof of address (bill with your name + address on it)
- A proof of your income:
. if you are an employee: your last payslip
. if you work freelance, you can bring documents like purchase orders from your clients (bring as many as you can because that's how the bank will evaluate your monthly income and set alerts/limits = better mention an income a bit higher than real in order not to ring any alert if you make much more money during one month). You'll also need, if you are a freelancer, a "certificate of average income for the last 12 months" written by a Notary public or an accountant (you'll need to produce this certificate every year).
Nothing more.