I ALWAYS have open land for events. I figured out long ago that if I just leave a couple of plots of land open I can make it my event zone and drop event items there until I'm ready to deal with them. That way when I get some new building I don't have to hunt all over my town for some place to put it before continuing on with the game. Or worse, have to move a bunch of stuff around to make a spot for it. Just plop it down in the event area - boom. Then I can take my time and decide where I want to put it, moving other things around as needed.
