I also think you should make the call but I wouldn't take anyone's word over the phone as gospel, because as others have said, not everyone understands what a hybrid is. You either have a pop up or a travel trailer. If you keep the bunks closed, you are as secure as every other camper. The doors, however, can be ripped open by a bear just as quickly too.
FYI, there are plenty of very scenic campgrounds in the park, just not with full hookups. Take a quiet gennie and hit the sites during the day. The nights are plenty cool.
