I love days off. You wake up(whenever you desire), brush your teeth(hopefully, if you still have all of them), and spend you day doing whatever it is your heart fancies(and your pocketbook can handle). You can see whomever you yearn to see. Read anything you have an inclination to read, relax, put your feet up, lay in a hammock(it may be a bit on the warm side here in Texas...100degrees, yowza), Go for a run, picnic in the park or take the dogs out to romp. Catch a movie or take a drive out to the lake...you get the point.
It however is always much better when you have more than one or two days to spend in whatever way seems fitting.