I don't fault AD's or Entertainment Directors for booking variety...but the smart ones will take advantage of the following their entertainers' have and book them in some kind of a regular pattern...like once or twice a month. It is difficult to maintain a following if the time between engagements is too long.
That is not true for Willie Nelson. He's been here twice in two years and sold out a 1200 seat theater both times. But...he is Willie and I ain't.

If Gary Diamond doesn't play one of his venues at least once a month, the residents go on a hunger strike and picket the hallways....or so I have heard.
Eddie