This article is from the Magic FAQ, by Paul Nielsen email@example.com with numerous contributions by others.
Charles, Kirk Standing Up Surrounded
(1989, Hermetic Press)
[SD] Advice about performing in a crowd on your feet with a Foreword
by Eugene Burger. Covers the kinds of bookings you're likely to get
requiring such performance conditions and deals with subjects like
"Food and Drink," "Problem Audiences" (e.g., children, repeaters,
drunks, jerks, and -- ta-da -- The Exposer), "Promoting," "Selling,"
sample contracts, and advice on selecting material for such venues.
Charles, Kirk Manual of Restaurant Magic
(1987, Conjurers' Press)
[SD] Just what it sounds like: advice on performing in restaurants --
Foreword by Eugene Burger. Sections cover preparation, booking,
selling, and, of most concern, the actual working of such an audience.
As opposed to standing up and walking around, it is likely you'll be
sitting at individual tables with a small group (though some may end
up behind you). It talks about getting tips and getting away from a
group politely, too.
Ulman, Al Business of Restaurant Magic
[RD] This covers much of the same ground as Kirk Charles's book. Lots
of sound advice for starting out as a restaurant magician.