I had a Christmas party last night with all ages. Played Christmas music for an hour, than ramped it up a little, ended last half hour with music the "kids" could dance to, although not what is considered "dance" music
They danced to Mustang Sally (and sung along), Taking Care of Business, La Grange, Boom Boom Boom Boom, Tush, Sharp Dressed Man, etc.
Regardless of where you play, those same seven girls show up and want to "dance"! I only cater to them after the regular people leave or are worn out.
If I were 25 years younger and trying to make a living I'd have to play a lot of different things than what I do now.
Don't have to though!!