We recently flew home from MCO on Jetblue. The line for security and bag checks were completely nuts. We did carry on only and have TSA precheck and sailed right through.
A woman made the flight just as a flight attendant was closing the doors. She asked if the plane could be held for her friend who was stuck in the security lane. The flight attendant chuckled and said, "Sure, we'll get right on that..".
My mother-in-law wants to travel with us to Orlando in the fall. We just booked her appointment to get TSA precheck.