Hot Feet was painfully loud... I should know, I brought my dB meter and measured that in the last row of the house, the mix was peaking at around 104 dB "a" weighted, my biggest complaint was there was absolutely no definition in the low end, other mixes (Tarzan comes to mind) were just as loud (Hovering within the 90's), but not nearly as offensive due to a tightness in the mix.
I think that this discussion needs more objectivity, right now people are just saying that a show is loud to them as individuals... is anyone else a geek like me and keeps a dB meter handy when they stumble into broadway shows? There are so many factors when dealing with sound and the concept of "Loudness" read the perception of what we hear as opposed to strict sonic intensity (For example, the intensity for us to hear in the mid-range of frequencies much lower than that at the low and high range [do a google search for the fletcher-munson curves]). Just a bit of food for thought.
The one show everyone on Broadway is waiting to see: Twyla Tharp presents: Big Bottom - The Spinal Tap Jukebox musical!