Interesting. And the $24 Regal theater I was looking at in Issaquah, WA is apparently LieMAX. The real thing seems to be quite rare. In Seattle, I will probably try the Pacific Science Center, which charges $21 and advertises as follows:
PacSci is the home of Seattle’s ultimate IMAX® experience and the largest screen in Washington with two state-of-the-art theaters: PACCAR and Boeing.
See the latest movies in the Boeing IMAX Theater, one of the most advanced digital projection system designed specifically for giant IMAX screens. Films come to life on the six stories high (60 feet) and 80 feet wide screen during both 2D and 3D showings.
Plus, you support science education across Washington state when you enjoy movies at PacSci’s theaters!