I make rice with half water and half coconut milk, then season with salt, a little cumin, lime juice and cilantro. Then I'll serve it with black beans on top. It's really good, and while likely not "authentic" Cuban, it is Caribbean/Latin. By the way, by coconut milk, I mean the thin watery kind you find in the Latin section of the market, not the thick syrupy stuff you put in Pina Coladas.
For drinks, Cuba Libras and Mojitos are always favorites.
Good luck and have fun!!