I am bad at taking vacations

My employer has a use it or lose it policy when it comes to vacations and I had 4.5 days to use, so I'm using it this week. In theory, that is. In practice, I worked yesterday until about 4:30 pm. I wasn't working the entire time as I was letting some tests run in the background and installing some long-delayed software upgrades, but I was not exactly on vacation, either.