Have not missed a showing the past few years we went, and each time it has a little different feel to it.
Like Euphscott said "a good/bad Hades can make or break the show!", I totally agree.
On our last cruise which happened to be 2/1/03, there was a problem with the lift where he comes up, they could not use it for the last 1/3 of the show, so he came from the side stage making up his lines like nothing was wrong.
JMHO,
Norm