I highly recommend this bike rental as an alternative way to see and experience the park. There are dedicated bike/pedestrian pathways but you will need to share the road at times. The path towards Bright Angel Lodge is mostly a gentle downgrade but remember that's uphill on the return. If you are in moderate to excellent shape continue your trip up to hermits rest, but that means some elevation changes. You can hop on one of the free shuttle buses at any point, they can accommodate 2-3 bikes in their rack. If you are unsure of your abilities or endurance rent an electric bike.
The cafe offers coffee and grab and go food. It's better than your standard grab and go food. They offer a diverse selection of sandwiches, including gluten friendly options.