I asked someone at the I+E show at O2 how many shows they were doing ... they answered with a glazed and slightly mad look "all of them"and they werent part of the tour crew ... but a paying fan. Met someone in 1997 who was doing all popmart.
Me around 50 times since the 80's, I did all UK Joshua Tree shows in 1987 thats about as mad as I got. Rest were War, Unforgettable Fire, Love Town, Zoo Tv,Outside Broadcast, Pop Mart, Elevation, Vertigo, 360, I+E, JT30 London
Even if I won the lotto dont think Id do a complete tour unless I could take my dog with me ;0)