FLL is a very sad airport to spend much time in. And terminal 1 is pretty pitiful. One side is all Southwest and is completely overwhelmed with passengers (especially on cruise ship disembark days). The other side has a sad little Chili's. There is a Skyclub in Terminal 2, but I do not know their day pass policies.
I had a 5 hour layover there and found very little to do. No decent restaurants. In Terminal 1 there wasn't even hardly anywhere to sit. I would have called a cab and gone somewhere off property for lunch if I had known how pitiful it was.