My fiver is now 21 years old. It wouldn't be accepted in any of the "10 year rule" parks. Even though it has been completely refurbished by my high school buddy and I, the process taking two years. All appliances updated, new roof to include replacing the entire roof structure, and now the rig is as shiny as a diamond in a goat's butt.
Not that I have to fret, though. The parks I frequent have restrictions, too. No one allowed in unless they are active military, retired, or 100 percent service connected disabled veteran. Since most of these parks are behind fences and are patrolled by armed security forces, the wife and I sleep like babies. Having access to these "exclusive parks" is one of the perks of being a cranky old Air Force retired NCO.