I am booked or unavailable on the highlighted days. I try not to book more than one event per day unless I can be absolutely positive I have several hours between them. Also, while I do not try to book more than one wedding a month (because I really do spend a month editing photos), I am not crazy enough to turn down a chance to take photos. I strongly value quality over quantity, so I would much rather spend a lot of time making a few weddings look great than do a so-so job on a lot of weddings.
Events, portraits and headshots only take a few days of work so I can almost always fit those in.