I went to the sing along at Videopolis and it was better than I thought (I thought it was gonna totally suck). I don't like Frozen and I don't sing, so I'm not even their target audience. I think they should have sessions AT LEAST in English at French, like they do with Stitch. The hosts were very engaging, very funny, and they made it very entertaining. I could see people stopping by with their kids, specially considering half of the girls are wearing Elsa or Anna costumes.
Also, they asked us to fill in some questionnaires, which I think was a great idea. They asked what we liked, disliked, how many of us were, how many sang, how many kids, of what ages, where we lived... All the right questions.
The Chaparral Theater's area is pretty dead, and I don't think this could do any harm, yet it could attract guests to the area. It's better than not having anything at all.