We highly recommend having both USD and ARS. Please note given the fluctuating exchange rates that some of the ATMs are not equipped for providing more than the equivalent of 20 USD per transaction. We recommend locating an ATM from a bank branch (BBVA, HSBC, Santander are a few).
Yes! Most of the Taxis operate via uber. The app will work just as well in BA. If you take a cab at any point be sure to have cash.
There is a direct flight option from JFK via Delta or American. Please book what is most convenient for you! The Buenos Aires International airport to select is EZE. The flight time from NYC is ~10 hrs. It is an overnight flight and with the 1-2 time difference jet lag is basically not a thing :)
Wherever is most suitable to your needs! Alex and I will be staying at the Four Seasons in the Recoleta neighborhood. This is where the room block is booked, but feel free to make other arrangements! The venue, Palacio Sans Suici, is located just north of Buenos Aires. We would recommend staying in either Recoleta or Palermo. Recoleta is known for being an elegant neighborhood with French-style buildings. Palermo is the bohemian neighborhood, and the most popular among visitors. Palermo Soho is trendy (cafes and shopping), Palermo Chico has great architecture, and Palermo Hollywood has a number of bars and restaurants and more known for nightlife.
The ceremony and reception will be at the same venue! Palacio Sans Souci.
Dress code is cocktail attire. November in BA is the height of their warm season (tail end of spring), with temperatures averaging in the high 70s (F).