You're welcome : )
I'm sure they did (or at least tried to, we all know how well sleeping doesn't always work in a tent).
Though you do have to also remember that, as part of the program, the youth are doing a fair amount of the work (aside from driving, obviously).
So, the adults would be doing the activities, but once back to a camp setting, they are primarily setting up their own stuff, while the youth are doing the cooking/cleaning and setting up needed group stuff.
It also helps that the group in question did trips frequently, hiking many times with many of those using full backpacks, and offered those going on these trips special meetings to build up with exercises and such (even doing laps of a track while only breathing through a drinking straw to help simulate the lower oxygen of higher elevations).
Plus, that one of the adults (who could qualify the group for entry under one of those senior passes for the parks by the final trip) who would, when the group did summer camp about a 45-minute drive from home, often ride there (and home) on his bike one day just for fun ;).