PVD is a delight!
You will walk into the terminal (yes THE terminal, there is only one) and walk about 25 steps, and you will be at the SWA counter. (It's on the left). It should take you about 10-20 minutes MAX to check in. Then, security, which our last time through, literally took as long as the three of us needed to walk through. Poof, we were done.
You will leave on time (if not a tad early) barring anything unforseen, and you will wonder why you did not try flying out of PVD sooner!
Have a great trip!