Your feet are going to have to do a lot more work if you're constantly slipping around because your new shoes don't have any traction yet. Take some sandpaper and rub it against the bottom of your heels until they're noticeably rougher. This will create more friction between your shoe and the floor, and prevent you from taking an embarrassing tumble on the dance floor.
Keep silica gel packets in your shoes when they’re not being worn. Have you noticed after purchasing a pair of new shoes those little white packets containing tiny clear balls inside your shoe box? Those packets contain silica gel which absorb moisture and keep your shoes from shrinking. Hold on to those packets instead of throwing them away and stick them in your shoes when you’re not wearing them. You can ask a shoe store associate for extras, if necessary.