The Family Visits category of travel stipulates that U.S. citizens are allowed to declare this category to visit "close relatives," defined as: "any person means any individual related to that person by blood, marriage, or adoption who is no more than three generations removed from that person or from a common ancestor with that person."
The rule also stipulates that " persons traveling with them who share a common dwelling as a family with them" also qualify for the Family Visits travel category.
See here for additional details and examples.
For answers to more questions about travel in Cuba, feel free to send a message to one or several of our local Cuba planners through the link on their profile page. You can message locals for free before booking to ask questions and get a sense of who would be the best fit!