The airport, EZE, is well outside of the city. There is no rail connect to the airport, so your options are to take a cab or take the bus. Buses can be extremely inexpensive, but they do take longer (up to two hours) and are not as easy. Some buses are semi-express to BA, while others are local buses. A taxi ride will run about $30, which is cheap when traveling with other people. We took a taxi, which was the right choice. We ran into traffic and would have been late if we had chosen to take the bus.
We didn't have too long, but we did take a swing through the United Club here at EZE. It's fairly basic and a little cramped, but it gave us a quick place to rest and refresh before getting on the plane.
After the break, we have our inflight first class meals on the Buenos Aires to Houston leg. Keep reading for the details!