[gcanyon]

The IMAX screenings are pre-committed to future movies -- it might be the case that Spider-Man takes over in two weeks and the window for The Odyssey is closed, even if more people want to see The Odyssey in IMAX than Spider-Man.

[Marsymars]

If the ticket sales show that demand difference, they'll often flip back. e.g. I missed Project Hail Mary in imax because they bumped it for the Mario movie, but if I'd waited an extra week they swapped back to Project Hail Mary in the imax theatre, presumably due to relatively low ticket sales for imax Mario.

[xnx]

A theater near me has 70mm showings. I have to imagine they'll find a time/way to fit showings (at $25/ticket!) until demand drops.