Just get a fake marriage certificate - This is just in case if there is any police raid. For additional safety, get a few roadside uncles and auntys and get their cellphone numbers. Tell them to act as your / your gf's parents if police called them. Tell them your names and say like if police called tell the police you went to the town for honeymoon etc.
If you are worried about cameras, get a dark poratable tent inside the room and stay inside. If not do everything inside blanket with lights off.