I'll just add one thing to Beth's comments:
She said, "Short teachers are important" and she cited Tony saying, "Keep
them
moving."
Part of the "keep them moving" idea, in my mind, is to follow one dance
immediately with another. Don't let 'em sit down. They just finished a dance and
applauded the band... get 'em lined up /squared up / circled up right away while
the energy is there.
I learned from Dudley when booking wedding gigs to insist on 45 minutes of
dancing before the cake is cut... after that, who knows if you'll be able to
gather up enough for the dancing to resume.
David Millstone