As far as I know, we have hydraulic stabilizer jacks. I don't know about the air leveling system, other than it does have an air ride suspension. I'll have to try and locate the travel button. The dealer didn't seem to know what most of the buttons did.
I have a very tight driveway, so yes I'm probably using two feet to back in, because my wife is constantly yelling "Easy! Stop! Slow!". I can park much easier at a campground without much trouble.
By the way, I've read the manual several times, cover to cover. It's almost useless. I'm convinced there MUST be another manual to this thing. My car's owner's manual is far more extensive than the HR manual. It says things like 'dump the air', or 'air it up' but it doesn't tell you how to do it. I guess they think everyone is experienced. I especially love how the manual refers to using a remote control for the inverter, but no such remote exists.
Thanks everyone for the good counsel.