I was there in January and March and tried to print boarding passes 24 hours before schedule take off and could not. We went to the airport 2 hours before leaving and it was not a problem, or I think expected, that we would have our boarding passes printed.
They gave them to us at the airport,, including our connecting flight no questions asked. JetBlue and American are the most frequent fliers going in and out of there and they seem to have it down pat.I would say don’t worry about trying to print boarding passes. They will take good care of you at the departure tent.