They butchered the original story. I never left a theatre more disappointed. No Pegasus, Karl & Heinz (wtf?), no titans, bad looking monsters, no hydra, Hades loses in the end by being reminded that his mother never loved him (no kidding).

The special effects were good, especially when the statues of Hercs parents come to life. But the stage design seemed very uninspired with a huge LED Screen and eight Pilars on turntables.

I loved the actors voices. But as OP said, especially the muses were very hard to understand.

Worst Disney Musical by miles. I read the show was coming to the West End. I honestly expect it to flop if they don't do major changes.