Playing too fast for dancing can actually be counter-productive. There's a crossover point at which the dancers can't actually keep up, so they halve their efforts and end up trotting, or plodding at half speed, because there isn't time for them to get any lift into their steps and hit the ground again.

Whether dancing speed matters at sessions is a matter of taste. I prefer to play at a danceable speed and keep the feel of the dance, but others prefer showier, faster playing where there's a single pulse rather than a more complex rhythm pattern.

Marje