The theater itself is pretty nice. Very clean, and pretty good options at the snack bar.
The IMAX screen is almost disappointingly small, and I honestly didn't notice a difference in "experience" or "immersion" from the Real 3D at other theaters. Definitely not enough to justify the price jump. While the sound quality is fantastic, their base is turned up so high that it drowns out dialogue sometimes.
Probably the most annoying thing for me was that the ceiling and walls around the screen are reflective, but you can only see the glare through one of the polarized lenses. Since the screen isn't large enough to fill your field of view, this creates the illusion that there is a light shining into one eye or something, and is pretty distracting.
Overall, I'm glad I gave it a try, but I'll be sticking with the giant screens and recliners at AMC.