Hi, I did the Cuba holiday last year, its a fab tour, a lot of travelling but very interesting, we had a local guide who stayed with us through out and was extremely knowledgable. The people are poor and to them things are quite expensive but to us are cheap, they appreciate being given soap, shower gel, toothpaste etc & also pens, pencil etc for their children and they love t-shirts so take lots with you to give away. As Cindy says just go for it, you won't regret it, my first tour was to China and since then I've done 2 USA & Cuba.
Dot