737steve
I'm using this website to monitor the levels at Bratislava and Budapest:
https://www.danubehis.org/results/SK5127_HYDRO?symbol[h]=h
I just don't know what to view as a minimum level for the boat at any of the locations. Good for observing a trend, however.
We are arriving in Munich a day early as well. I hope it goes as planned and we can toast our good fortune.