The company my DH works for has its corporate headquarters in Lancaster...and I am lucky enough to get to travel with him!
We usually stay at least a week, so we both get cabin fever from those hotel rooms! We like to walk around in Park City Center Mall, and they also have a Jo-Ann fabrics (near the mall) that is open on Sunday. We also just drive around and look at the scenery, it's beautiful country! Are you going to hit The Old Country Store on Monday? I love that place!!!