We got our '65 Caravel
in 2000. We have towed it about 80,000, most with our '47 Chevy Street Rod.
I think Caravel
is the best use of space of any Airstream.
Post the problem with the sub floor. The floor at the very rear of ours, under the back of the bathroom rotted away. I was able to replace it without removing anything from the inside. Caravels really like to gather water where the hinge for the bumper storage area meets the body. It will cause the bolts holding the rear of the shell to rust away causing separation. Bounce on your back bumper and be sure that the shell is firmly attached.
The other thing that caravels are famous for is broken axles. If the axle has not been replaced, replace it. Just a heads up.
I hope you get as much use and enjoyment from your Caravel
as we have.