Happily I had time to go to the farmer's market (forgot my new digicam, though), the third batch didn't spill, and the house required only minimal picking up. I was able to stay awake through a movie as well ("Saved!", a charming film).
And the issue today was solved by a co-worker, whose change in the morning caused it in the first place. (I also didn't spend three more hours doing it. Which would have really sucked because everyone else is having a nice long weekend.)
For the first time in a while, the RFC gang isn't having a July 4 potluck; I do plan to have an all-American dinner (tri-tip, tomatoes, potato salad) and go to sleep as soon as the fireworks stop booming and the neighbor's party quiets down. At least I have two more days to actually recover from work done over the weekend.