So I stopped on the way for a Philly cheesesteak (the first of several poor culinary decisions) and arrived at the theater just before 1 p.m. on Wednesday, picking up my special-edition Avengers badge, Marvel poster and lanyard (for easy readmittance over the next day and a half).

The show began promptly at 1:30, and at times, it was like being at a rock concert where the band only played the hits. The crowd cheered, loudly and often: for the Marvel logo at the start of “Iron Man” (2008), the first film in the series; for the introductions of their favorite characters; for catchphrases, like Captain America’s “I can do this all day”; for each cameo by the Marvel Comics giant Stan Lee; for the first kiss between Steve Rogers and Peggy, or Thor and Jane. (Thor’s first shirtless appearance was greeted by an audible “Day-um.”)

It wasn’t the first time fans had the opportunity to marathon their Marvel. Steven Krietzberg was at the first one, leading up to the release of “The Avengers” in 2012, as well as the 2015 “Avengers: Age of Ultron” marathon and the mini-thon before “Captain America: Civil War” a year later. Why did he choose to revisit them in a multiplex, rather than the comfort of his own home? “You get to see them the way they were meant to be seen, on the big screen,” he says. “This is pure movie magic to me.”