I love Luray Caverns. Beautiful place. I also collect 50s dinnerware called LuRay Pastels...named after some of the soft colors in the caverns. Its a very pretty area.
You actually do not need to worry about humidity too much with VFTs. They are not tropical plants. They do well indoors but I'd recommend outdoors where they can function more naturally. Virginia's climate isn't too much different than North Carolina where the flytraps grow. So they are an easy plant to grow here. Mine stay out year 'round.
Humidity becomes more of an issue with some sundews and neps depending on the species.