Careful to count your songs

The Cubans will try to hustle you, especially if you got a dance from 2 at a time and are pretty fucked up from drinks. Keeping count on your own -- and also a bit of Spanish so you can hear them talk to eachother -- will prevent you from overpaying like I almost did. They might try to wear you down with tip requests, but again, be reasonable and they will kiss you goodbye and leave you be.