I went on a local tour bus that was arranged through my hotel but I really didn't interact with anyone except the tour leader, but I don't think anyone else was North American or even British.
Plataforma is known for having what is essentially called a Samba show, but I was forewarned by TripAdvisor reviews that it was more a folklore dance show.
Within the context of what it was--an evenings entertainment featuring music and dancing native to Brazil--I sufficiently enjoyed it.
Not so unlike the Irish-themed Heartbeat of Home, the production featured incredibly sculpted and talented men and women doing dances in a variety of styles and costumes, including those representative of ones worn during Carnaval.
it didn't match the production values of a Las Vegas show, but was a bit more appealing because of this. Some of the numbers were better than others but most were rather impressive.
Before the show I had gone to a Bob's Burgers near my hotel. Bob's is a chain akin to McDonald's but I don't know where it originated.
The service was a bit slow for fast food, but the Gran Picanha sandwich and combo I got was satisfactory if not quite sensational.
Even better was the Dulce de Leche churro I got from a nearby cart.
Tomorrow I'm planning to see some sites in the Centro (downtown) area. Supposedly it's a bit desolate on weekends; hopefully no more so in Chicago's Loop.