Originally Posted by
Middle_Seat
Is there a separate line for paying the reciprocity fee, and do they accept credit cards?
Before she leaves the States, the OPs daughter should have her smartphone unlocked, install Skype (or equal) and WhatsApp, possibly a universal SIM card like OneSimCard for use until she can get a local SIM, take an ATM card, etc.
Since Argentina has a weird currency situation, perhaps she should take a lot of crisp $20 US bills for exchange at one of the unofficial exchange sites?
You have to pay your "reciprocity" tax online before you leave home and print out the receipt to take with you. You won't be allowed to board without it.
She can get a SIM card once she gets there.