Don’t buy drinks with ice…. Yes, I know they are cheap ($1-2 US each) and the rum is amazing… but those frozen drinks are made with ice from water you shouldn’t be drinking and no, the alcohol does not protect you. During my last 2 trips to Cuba at least 20% of our group got traveler’s diarrhea. Safest thing to do is not chance the ice cubes.
Ride in one of the classic taxi’s in Havana. I recommend the convertibles. Loved driving along the Malecon and getting a little wet from the sea spray on a windy day!
Stroll around Old Havana. Watch the people. Browse the shops. Admire the reconstruction of the old architecture. Eat a churro from a street vendor. Enjoy the music that is ever present in Cuba day and night.
Go to a jazz club or dance show. They start at 10 pm and admission often includes 1-2 drinks.
Visit the Hotel Nacional in Havana. Imagine American mobsters and Frank Sinatra siting in the bar. Walk the grounds. Have a drink in the outside bar. Check out all the memorabilia and read the plaque about Americas over the old roulette wheel.