Cons: The flight was delayed by 90 minutes with no announcements to explain what was going on. We hit an air pocket in the short flight between Freeport and Ft. Lauderdale that caused a sudden wing-dip unlike any turbulence I have experienced. This was more than the usual bumpy ride. A flight attendant was injured, requiring emergency attention when we landed. Understandably in view of the injury, the flight crew was unable to give normal service to the passengers. It would have been good, though, if there had been an announcement to apologize for the incident, and give some reassurance that the attendant would be okay.