Stressful as that must be, there's not a whole lot of point in putting it in your ad. The type of people who cancel with 3 hours notice, as he points out, really aren't going to be deterred by him pointing that out. It's like the signs in the office kitchen saying "if you take the last cup of coffee make another pot". People who'd do that aren't unaware, they don't care.
Anyway...back to the topic - sorry, no personal experience with this guy.