We went this afternoon. The museum is small, but worth four bucks by itself. In addition to a space the size of our living room filled with various types of 3-D art, it also has several cases full of different 3-D cameras and viewers, plus a number of the original figures from View-Master reels (cartoons and fairy tales, mostly).
The movie was very well made, a good translation of the story with excellent visuals, although the acting wasn't quite up to professional levels. But I had one big issue with it, which is that the pieces of slow glass are all showing scenes from different times and places (beach, snowy forest, etc.), but the point of the slow glass farm is that they are all soaking up _this_ particular beautiful landscape and displaying it in perfect sync (and one character takes pains to point this out). But I can't really fault the filmmakers for making this change, because showing it as it was described in the story would mean that all the pieces of slow glass would be almost indistinguishable from ordinary glass unless you looked closely. As filmed, it looks cool and very impressive. The film is still worth seeing, despite this logic flaw.
Not recommended if you are prone to migraines, dizziness, or simulator-sickness.