Tomorrow the opening ceremony will take place at 6PM at the Obelisk. Two weeks of games will follow.
Free passes are out of stock, but the opening ceremony is open to all.
Details of the games here: https://www.buenosaires2018.com
Transit affected during the ceremony and the Games: http://www.buenosaires.gob.ar/…aign=jjoo_cortes_9dejulio