I wasn't entirely sure what to expect. I grew up on Disney's version of The Little Mermaid, and had been forewarned that this was much truer to Hans Christian Andersson's version, which I hadn't read. Though I do wish I had familiarized myself with it prior to the show so that I could brief her that there could be a couple potentially unsettling parts, it ended up not being a big deal, since she's a.) insanely brave for a three-year-old, and b.) understood it was pretend and held my hand when she felt a bit nervous about the "sea witch".
We unfortunately weren't allowed to take picture during the show - pretty standard for any productions these days - I did get this snapshot of the set when we walked in:
It was pretty great. The show itself was quite entertaining, with the use of puppets and projection screens to tell the story and handle the difficult staging on the mermaid turning into a human. Pretty creative!
All in all, I would highly recommend children's productions at Zach Scott. I've now seen both The Little Mermaid and Goodnight Moon in both of their smaller theatres, and never am anything short of impressed!