As a non-US citizen (J-1 visitor status) I am traveling this weekend to Cuba from the USA on a JetBlue flight (Boston-Fort Lauderdale-Havana, Havana-Fort Lauderdale-Boston). As a visitor "located" in the US, I apparently fall under American law, meaning "tourism" is prohibited. I am traveling on an "educational purpose" (OFAC licence, approved through my affidavit), independently, without an agency or an official invitation. Reading through OFAC documentation I interpreted that independent travel is possible if a 24-hour schedule of people-to-people interaction is provided (OFAC doesn't detail on whether, how and where they verify that matter).
I have prepared so far: written list of Cuban houses where I stay and interact with people, places that I visit (museums, schools), local taxi company that lead me to these places, and an oral statement on how this trip relates to my research. I wonder if this is sufficient.
Does anybody have recent experience (since September 2016, and in best case as a US-visitor) regarding what customs border protection officials (both in the USA and in Cuba) require as documentation/statements (if they do) to prove the "educational purpose"?
Your help is much appreciated