Why don't you go into the Bank. I regularly uplift $150K without a problem from Banco Popular in Santiago. You merely have to instruct your home card issuer that you require large withdrawals.
If you are talking about a cash advance on a credit or debit card this ends up being more expensive than a simple wire transfer to a local bank.You Can go into any bank and withdraw as much as you want, within reason, without any charge from the machine, the only charge you will take is from your own bank (don't hold me to that but in my experience). Just go in with your card and passport or cedula, they call some superior financial god like character who tells them you are a real person and then they charge the card and give you your wonga, simple really!
If you are talking about a cash advance on a credit or debit card this ends up being more expensive than a simple wire transfer to a local bank.