Just say no.

I hate musicals.
Everything about them. How the characters are in totally separate parts of the world, but sing the same song and work off each others' verses perfectly, how dialog is in singing form and is therefore always rhyming, and in reality, there are only 3 tunes being used again and again and again, only with different words (like Baa Baa Black Sheep vs. ABC'S vs. Twinkle Twinkle Little Star). Honestly. And that's considered a form of entertainment?!
True, the performers tend to have fun performing in shows, but keep in mind how much time goes into the preparation and presentation of it. Take me, for example. I've spent about a tenth of the time that a lead character has on the musical, and I've spent about 30 hours in the windowless theatre over the past week. My job is brainless, but necessary. I am the Mic Mistress, pretty much. 5pm-10pm, replacing batteries, handing out mics, taking them back, unmuting the mics of the fools who messed with their battery packs, and the occasional removal of a chair from the stage, just to stir things up.
One show tonight, six to go.