We want to take a small tent trailer does anyone know if this is consider a “vehicle” my husband thinks yes but I disagree and cannot get anyone to answer the phone to ask

I would imagine that it would be included with the vehicle it's attached to. However, most sites, unless they're RV specific, would only have the parking space available for the tent trailer. You wouldn't be able to put it on a tent campsite due to a barrier between the parking spaces and the campsites. So in that case, if your site allows 2 vehicles, your car/truck/suv would take 1 spot and the tent trailer would take the second spot. I hope that is helpful!

Yes it is!

It's a trailer. It has wheels, hence a vehicle.