If you're traveling on the PA Turnpike and dropping $20+ for the privilege to do so, you should be taking advantage of all the stops you require to make the trip enjoyable.
Bathroom breaks are a must and the women's side in particular is large and has an abundance of stalls to service the mass female population. Coffee pit stops are also a necessity when road tripping it, and Starbucks appears to be a staple in all the service plaza's. They're not a real Starbucks but they accept my gold card and keep me caffeinated.
Of course a gas station is always included so make sure you fill up as you make your way back onto the Pike.