They do training all day every day in these planes. Air shows are probably less exciting than the stuff they practice to do. Also, while they a generically '18's' they are EA-18g's and possibly have enough differences to require maintaining a separate NATOPs check from the other variants. (never flown one so I don't actually know though :). Either way, other than the blue angles who can't be everywhere and don't represent the diversity of platforms out in the fleet, there really aren't dedicated airshow aircraft out there.

These were locally stationed, just over the border in Washington. The Blue Angels are in Florida today.