Ok so the site doesn't sufficiently explain the benefits...roger that.
It's because the rack would be bolted to the ground, and would have those bolts that lock the bike chained to the rack. So you just go into the store and get the locking caps, or carry your own around with you.
If the racks are full, then you are out of luck I guess. I don't think he would mind telling the property owner that because the solution would just be to buy more. They would be close together like normal bike racks.
What's also cool is that if you have a U lock you can just use that to lock it up too. It would fit right through the holes that the bolts fit in.
sorry for the multiple posts
thanks for the reply!