I had Rebirth Brass Band in ca. '96, their's stipulated they be taken for a grand physical tour of Frankfurt red light district. After the gig we had to take them fucking.
One general experience I have mostly had is that the more inexperienced the performer(s), the more "interesting" their tour requirements and off-stage-antics became. Conversely I have grovelled many a time to a (for me) iconic artist, only to find out that they are the most normal, unassuming and down-to-earth cats possible.