At the Meryton Assembly, when Bingley tries to persuade Darcy to dance, Darcy's response is (in part):

"I certainly shall not. You know how I detest it, unless I am particularly acquainted with my partner. At such an assembly as this it would be insupportable."

Then, at the party at Lucas Lodge, Sir William makes an attempt at small talk with Darcy. Darcy then says (about dancing):

"It is a compliment which I never pay to any place if I can avoid it."

So Darcy doesn't like to dance any time and/or any place. Maybe he danced the minimum number of dances with Bingley's sisters (at Meryton) only out of courtesy to his host. I wonder if he would have danced with any local girls at Meryton regardless of his mood?