My only concern there is that you have more tourists who don't realize that the $6 in change they have in their pockets can set off the metal detectors.
According to JetBlue's website, they recommend arriving at the airport 60 minutes prior to the flight, even for a busy airport like JFK.
Boston is an exception JetBlue recommends 90 minutes.(two hours for AM flight) What is the reason for this? Does it take a long time to check in and/or clear security at JetBlue's terminal there?