Not really Danny,
With good quality tubes installed, (and correctly biased), You can thrash on it and it will take it, and last for a long time.
The Peaveys, are pretty well built and I have to say durable enough for road use. You can take these out and play football with them. It's pretty solid construction. I wouldn't do that with any of my ADA gear though.
As for the Fender, I have three other tube amps from the 70's, and they have been running 20+ years with the tubes that are in them, and still sounding good. The 400PS is in need for a re-tube, and probably wouldn't hurt to have it re-capped and checked out thoroughly, but after that, it can go another 50 years and still kick major booty.