Does anyone know the terminal layout for Ost station?
From a google search
http://www.mvv-muenchen.de/fileadmin/media/download/muenchen_ostbf.pdf
It's a through-and-through station, like most in Germany. All the platforms and tracks are parallel, sequentially numbered and on a single level.
There are eight tracks connected by two tunnels. The S-Bahn uses the tracks closest to the station building; most of the time, the trains to Salzburg and Rosenheim use track 8, the farthest from the station building in one of the tunnels. Some trains use tracks beyond 8, eg, track 11 for trains to Markt Schwaben and Mühldorf, which can only be reached through the eastern (longer) of the two tunnels.
Thank you all for your help!! Starting to feel a lot better about train travel!
One of Munich's several Dunkin Donuts is at the station, too: street level, facing the bus stops ;)