Nobody cares if you can't dance well. Just get up and dance.
--Dave Barry
Calling Ideas for March 31, 2012

This is:

Dance Marathon Day
The first dance marathon in the United States was held in New York City in 1923. Alma Cummings set the first record by dancing 27 hours.

You could try a marathon tip...obviously not 27 hours, but maybe keep it going for 30 minutes or so.

See this page for info about a teen dancer square dance marathon that lasted for 18 hours.

March is:

Optimism Month
Encourage and inspire each other to be optimistic about the future of square dancing.

Here are some songs that come to mind: