We've discussed this before. Probably many times. No campground owner is going to turn down perfectly good money because you have an 11 year old rig. I doubt you could find a CG owner that can identify the year of every make and model of every RV ever made by looking at it. They will turn one away that looks like if they let it park, it will never leave. In the morning, the TT will be sitting there with license plates removed and the TV is gone, never to return. And its really difficult to throw an RV away without the title.
Owners are also aware of this forum and others, where people complain about the junky RVs in the park and swear never to return. Most RV parks have an office window that looks out on the check in spot so they can see your rig. But on the chance that they turn you away, move on down the road. They have wheels.
Mine is a 2003 and facing the possibility, but I bought it new, its always been garaged and runs like a top. If some CG operator wants to check the title and turns me down, I'll move on down the road. It isn't like they're taking away my next birthday. I just don't get to stay.
Frankly, I can't imagine anybody towing an Airstream getting turned down. Not only are they classics, every year looks the same.