Blondeslave,
Off the next exit on Rt. 29 in Collegeville is a very large town center with shopping and several restaurants. My pick is PF Changs but there are several others. And, if you are looking for something a little different, there is a movie theater that includes dining. You eat while you watch the movie. They should be able to give you info at the hotel. Enjoy the show. I will be going tomorrow.
Also, there is a quilt shop not too far away (maybe 8 miles) on Rt. 113 called Chester County Quilting. In that same small shopping center there is a good restaurant called "Epicurean". You should probably make reservations if going for dinner.
And, of course, King of Prussia Mall is just up Rt. 422 about 6-8 miles. Plenty of choices there.