We went July into August last summer. This summer we're going the last 10 days of July.
DW and I did sneak in a long weekend visit two weeks ago. I hadn't used any personal days yet, so I took one on a Friday and the one on the following Monday. We get three, so I still have one reserved should I need it during the next month (this is separate from sick days, of which I've taken very few this year). Anyway, we left on the first flight out after school on the Thursday and flew home Monday evening. Crowds were fine, but we were going to relax, not do everything. In fact, we were going just to do the big rides that we can't do together with DS (3).
My students are all done with state exams, were taking the SAT that weekend, and we're still 6 weeks out of finals at that point, so I thought it was an appropriate weekend to sneak off. The guilt started to wear off when I saw the Magical Express bus waiting for me. It was gone when we entered the lobby of the Poly.