While Cuba isn't a queer destination (yet), it's more tolerant than many other Latin American countries. The hit movie Fresa y Chocolate (Strawberry and Chocolate, 1994) sparked a national dialogue about homosexuality. Activist Mariela Castro, the daughter of Raúl, has led the way in much-needed LGBT reforms and changing social perceptions. Today Cuba is pretty tolerant, all things considered.
People from more accepting societies may find this tolerance too 'don't ask, don't tell' or tokenistic but Cuba remains ahead of most of Latin America in this respect.
Lesbianism is less tolerated and seldom discussed and you'll see very little open displays of gay pride between female lovers. There are occasional fiestas para chicas (not necessarily all-girl parties but close); ask around at the Cine Yara in Havana's gay cruising zone.
Cubans are physical with each other and you'll see men hugging, women holding hands and lots of friendly caressing. This type of casual, non-sensual touching shouldn't be a problem.