We've seen both. Would say they are about equal good fun & very entertaining, unless you absolutely hate ABBA music. But even then, you have to know they almost make fun of about half the songs...the comic twist they put on the lyrics is great fun.
Saw the Broadway Across America (road show) last year, and saw the movie opening weekend. LOVED both (50-somethings...we grew up with ABBA music!) Our 20 yr. old daughter has also seen both and enjoyed them very much too.
Movie is wonderful fun...most of the guys in it can't sing, but they try anyway. The women can all sing (Meryl Streep sings very, very well...surprise!) It's not oscar-winning movie, but funny, entertaining & lots of just plain fun with absolutely spectacular scenery (the background of Mediterranean blue sea in nearly every scene...awesome-it's almost worth the price of the ticket just for the location filming.)
The play is also great fun...staging, costumes & everything was very well done. We had very low expectations...only reason we were going was because we had tickets included in our season subscription...ended up loving the play.
I didn't grow up with ABBA but for reasons neither I nor my gfs understand, I 
their tunes! I was surprised DH liked it as much as he did. The show was a great time and we were standing singing and dancing along at the end of it; I'd definitely recommend it! 
during the show while the audience members in front of them hushed them to be quiet) 
It is a feel good show. you leave there feeling amused and uplifted and really it's just a dance in your seat kindof show. The movie is fabulous in it's own right. It is not because the vocals are so great although Meryl Streep surprised me especially wit hehr rendition of Winner takes it all really moving as really only she could pull off!. It is probably my favorite stage show I have seen so far.
not so much
