Not a big Vegas show guy but
 

family came to town and I doubled my lifetime shows in two nights.

However, both are good family shows.

Blue Man Group is awesome for all ages.

Mama Mia is more a chick flick type of thing, my twelve year old boy went to be with his grandfather, but it is enjoyable for those of us who remember those tunes upon release, not that I was a big ABBA fan, but I like girls, so go figure.