It's going to be kid friendly -- hopefully, your daughter will still be a kid by the time we get it done! I'm kind of approaching this like a "Star Trek for kids" and the plot is more or less lifted from TMP. It won't be necessary to have seen TMP, but anyone that has will get another layer of enjoyment out of it.
At least, that's my hope. We're going to have our first reading of the script on Saturday with the cast and a small audience of friends. Hopefully they'll all think it's as funny as I do.