No such animal as "Ipanema Street Party". She may be referring to Banda de Ipanema - that gay group bloco which is the biggest bloco in Ipanema - you can buy one of their t-shirts and join the parade group, we were there in 2017 and we still have their t-shirts. However, they move at a snail's pace, like many popular blocos in Rio. Problem with many popular blocos, they are crowded like a Tokyo subway during rush hour. Amazing atmosphere is right, but crowded. If you are covid-shy, don't bother with Carnival.