Q: Are minors permitted to attend the show?
A: According to IMDB.com, Rocky Horror is apparently rated G in Quebec (strangely enough) so yes, minors are permitted.
Q: Is this show suitable for minors?
A: Ah, that's a different question. If you're a teenager asking this question on your own behalf, you're probably fine, come on down. If you're a parent asking on behalf of your preteens or younger children, well...it depends on how mature your kids are.You know your kids better than I do.