I have an 8-hour layover at Munich airport on September 16. I plan to go out to Munich city center. How early should I return for my connecting flight? The flight leaves at 15:35 and the luggage will be checked in from the first leg of the flight. The second flight is to the US, and I know I will need to pass through additional security check. I will also need to retrieve my hand luggage, which I will store at the left luggage facility.
Is getting at 13:30 enough? Also, it's the first day of Oktoberfest, so will I have any trouble getting to the airport with S-Bahn?