I've attended Rock In Rio 2013 and I can tell you the crowd was really crazy and really into the show, except maybe on Seventh Son of a Seventh Son (which was the most anticipated song for me) and The Prisoner. You have no idea how loud people were singing (the youtube version of Rock In Rio 2013 is really bad - Maiden sounded incredible at that night, just like the crowd was much louder than what you can hear on youtube, really). Highlights of public interaction were Can I Play With Madness, The Trooper, Phantom of the Opera, Run To The Hills and, ofc, Fear of the Dark. I remember it sounded like EVERYONE was singing to Run To The Hills chorus and sometimes you couldn't even hear Bruce because of that. Amazing, really.