We sailed with him performing on Celebrity many many times. Made it to two Michael's club performances, but met many fellow passengers in need on medical attention. Leaving Michael's club during his show would end with you having two posterior regions, as he would successfully rip you a brand new one. (and not in a funny way)
His following at the time accounted for less than 50 staterooms on most sailings, so I really didn't get the financial benefit to the cruise line.(He did have his super-patron ladies) Of course, there were special sailings with numerous staterooms booked for his performances. Of course, like us, he eventually moved on to Princess for a short time. (We missed those performances)