After going back and forth for a while self, wife and two little girls (7 & 4) will be making our first trip to South America. So far all we have done is booked our tickets arriving in Buenos Aries on April 4th and returning the 12th. I've reviewed the Q&A "stickies" but would welcome any suggestions. Especially areas to stay (I think there is a Hilton in BA, but not sure if the location is good) things to do that are kid friendly and "must sees". Any advice appreciated, thanks ^