Me too. I was so looking forward to it. Then Robert Plant didn't even know the lyrics and they sounded like a garage band of teens trying to cover Zeppelin tunes for the high school talent show. And Jimmy Page had the nerve to blame it on Collins, of all things.
Page was still on smack big-time then IIRC.
As good as LZ was in the studio, they were as disappointing live.
Page was great at multiple tracking his guitars in the studio, doubtless perfecting the sound through multiple takes.
Live, however, their sound was much thinner and hollow because Page could only play one guitar at a time.
Plant also relied on the studio to perfect his tracks. His voice burned out early on, and he was just a shell of himself in later live performances.
IMHO.