I happened to see a video on Youtube that reminded me of my favorite day of Basic Military Training School. It showed an event called Mudderella, a five- to seven-mile obstacle course through the mud. (One difference: I did not end up falling in the water and getting wet during basic training.)
It looked like so much fun I signed up for it and started doing the Navy Seal Workout to get in shape. The organization automatically set up a donation page on my behalf for anyone who would like to contribute to Futures without Violence, an organization that gets four out of four stars from Charity Navigator.
This short vacation will also function as a chance to adapt myself to some hardship, something the ancient Stoics recommended to keep your desires in check and appreciate what you have. The obstacle course might be fun, but the training, the three-hour drive and, probably, staying at another hostel-style hotel won't be.