It's no different than if you were to rent a car in another state, or even another country for that matter. As long as you have a valid license, for the vehicle you are driving, from the state you reside in, you can drive (that same type of vehicle) in another state or country. You must, however, follow the rules of the road for the state/country you are driving in. So if a state has a no helmet/seat belt law, you can ride/drive without a helmet/seat belt; conversely, if you live in a state with a no helmet/seat belt law and want to ride thru another that HAS a helmet/seat belt law, you MUST wear a helmet, seat belt, etc.
Don't sweat it, follow the laws of the road for the state you're riding in and enjoy the scenery.