How are the crowds at the shows? I was thinking of getting my parents something different for Christmas this year but don't know if these shows will be a little too much for them.
It's not like there are mosh pits or anything, if that is what you are thinking.
It's pretty mellow, just like any normal show, no stage rushing or anything like that. It is louder than your normal concert though, since it is a band with a drummer, bassist, guitars, keyboards, etc... playing sort of a metal style show.
There are lots of older people and families with kids that attend. Just sample the music on youtube first. It might be a little heavy for some people (it's not like going to a classical concert or anything like that).