DH hurt his back on one trip and needed 2 extra pillows to support his back while he slept. They gave them to us after we explained the situation. I don't know if that is normal practice or they were just being helpful!
That's true for the one and 2 bedroom units (although on our last trip, the extra pillows were in the master bedroom closet). Since we use the sofa bed, we use those pillows too and always get extras besides.