My wife flew out on Saturday at 4:00. She was at STT 2 hours before the flight. Went from curb side to waiting area in 20 minutes, i.e., "normal". She texted me the usual comments that "I could have been on the boat an extra hour and been just fine". I flew out on Sunday at 4:00 and had a bag to check. I too went from curb to waiting area in 20 minutes.

This is my third trip down for the season and each trip has gone through STT. All of our experiences have been more efficient than pre-Irma. The OP obviously had a bad experience but I"m inclined to believe something must have been going on that day.