Yes, Silvia, we did leave Munich on the morning that Oktoberfest began. Since we used to live in Munich, we've been to Oktoberfest many times, so we decided not to stay for it this time (plus the hotels become crazy expensive!). Of course, there are regular Biergartens open all the time in the warmer months which are usually more pleasant to visit anyway. So don't worry, we did make it to a Biergarten or two for a Maß or two. And here's the proof:

cheers!