Whenever you travel, you have to keep your mind open to new experiences and possibilities. It is likely that you will meet people with different customs, ideas; as well as eat foods you are not used to eating, and weather you are not used to enduring. However, it is those differences that make travel beautiful and exciting. If we wanted the same experience, we would simply stay home.
There is a lot of criticism of Cuba from people who dislike its government and its politics. You will hear bad things from foreigners and from some Cubans themselves. However, visiting Cuba for me isn't about the politics. It's about the family I still have there and the inevitable adventures that ensue from traveling there.
Just remember, feel free to exit your comfort zone and learn to enjoy yourself! And even the bad events in your travels make for some nice stories afterwards. In the end, it's good to look back at things with a smile.