These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Special Effects Failure: In an interview, Collins mentioned the various technical and costume failures made the show unintentionally hilarious and the reason the Broadway show had a short run time. He also expressed irritation that half the time, Gabriel's costumes interfered with his singing.
Tony Banks is on record as saying that he doesn't think there was a single show where everything worked correctly.
What Do You Mean, It Wasn't Made on Drugs?: Both the album itself and the surreal, fantastical stage show that resulted. Genesis, as (mostly) former boarding school students, were in fact one of rock's least intoxicated bands of their time, and were not normally followers of the rock and roll lifestyle (though they were possibly not entirely untouched by drugs or alcohol in their lives). Gabriel often jokes of the band rebelling by "removing the paper covers of the soap at the hotel" in the middle of the night.
Phil Collins claims that as the Lamb tour dragged on and on, he eventually took to getting stoned backstage before going on — he specifically chose to smoke grass because, unlike booze, it had no noticeable effect on his drumming.
Phil helped write and arrange some of the music for The Lamb along with the other Genesis members, but Peter Gabriel (by his insistence) wrote all of the lyrics and concept, save for "The Light Dies Down On Broadway", which Tony wrote the words for when Peter got writer's block. Gabriel was, for the most part, drug-free.