Yep. For a 14-screen Regal near me, the only movies with showtimes throughout the day are Endgame, Llorona, Breakthrough, Kalank, Shazam, and Captain Marvel, with one or two showtimes for Penguins, After, Missing Link, Dumbo and Us in the morning and afternoon. The 22-screener has Endgame throughout the day, as well as Llorona, Breakthrough, Penguins, Little, Shazam, Dumbo, Us, and Captain Marvel. After, Hellboy, Missing Link, Pet Sematary, Unplanned, and Five Feet Apart only have one showtime in the early morning.
So yeah, when it comes to people who can't get into Endgame this weekend, don't be surprised if especially Shazam and Captain Marvel reap some of the benefits.