NY laws might prevent you from carry, but check the law for keeping/transporting the gun locked in you trunk, or for that matter someone's home. You can't carry and they have strict buying/selling rules, but check on transporting and storing. Those laws may be very different than carry. I live in the free state of Florida, and do not claim to know all of the NY laws. Or you could just hide it under the spare tire, etc., during your visit. What are the chances for a search of your vehicle?
Found this but it is for transporting through, not about staying:
Transporting Firearms Through New York
The best way to travel through NY or any state that has restriction is to carry a copy of Title
18-Part 1- Chapter 44 926A of the federal code with you. Some law enforcement may not know the law. DO keep the firearm in a locked box. Keep ammo in another locked box. No ammo in Magazines or speed loaders in the trunk or if no trunk as far back in the vehicle as possible in a locked box. By NY
Law if you are traveling across the state and can legally possess the firearm where you started and
where you are going you can transport it as above. But if you stop in NY and spend the night in a
motel/hotel/camp ground etc you are in violation of NY law and can be arrested if found with a
firearm. Stopping for gas and food would most likely be OK but this is not a given in NY.
United States Code Title 18 - Part I - Chapter 44
§ 926A. Interstate Transportation of Firearms
Notwithstanding any other provision of any law or any rule or regulation of a State or any
political subdivision thereof, any person who is not otherwise prohibited by this chapter from
transporting, shipping, or receiving a firearm shall be entitled to transport a firearm for any
lawful purpose from any place where he may lawfully possess and carry such firearm to any other
place where he may lawfully possess and carry such firearm if, during such transportation the
firearm is unloaded, and neither the firearm nor any ammunition being transported is readily accessible or is directly accessible from the passenger compartment of such transporting vehicle: Provided, That in the case of a vehicle without a compartment separate from the driver's compartment the firearm or ammunition shall be contained in a locked container other than the glove compartment or console.
www.handgunlaw.us
Bob