You can always ask when you arrive. As was posted above, they usually do have some for a cost. The bad news is that you would have to pay. But, the good news is that the prices are (or at least were for us) greatly reduced. We went from a Cat. 4 to a Cat. 3 for less that 25% of what it would have cost to upgrade prior to that day. If you have the urge to try this, get there early!