No first hand experience, but I met a DL ramper at a bar in SEA a several years ago and he told me he could travel basically anywhere nonrev on little to no notice. I don't remember what he said the restrictions were, but it seemed pretty generous. He was a FT employee though.

I have tons and tons of time off due to the schedule I work, and I thought about picking up a PT job as a ramp agent for the flight perks and to help stay in shape a few years ago... but decided against it when I got a raise and the overtime at work picked up again

The kid in me still wants drive the tug and push back a 772 or something though...