With the CongressCard, which is included in your SSC2019 ticket, you can use public transportation within Mainz for free.
Mainz Central Station → Johannes Gutenberg University:
Johannes Gutenberg University → Mainz Central Station:
There are two main bus stops at the event location which are relevant to you: Universität, which is at the entrance of the university, and Friedrich-von-Pfeiffer-Weg, which is more centrally located in the event area. Coming from Mainz Central Station or Hauptbahnhof West, you can reach them best with the following bus lines:
6, 51, 53, 54, 55, 56, 57, 59, 64, 65, 68, 75, 90, 91, 650
53, 54, 55, 56
Here, we also advise you to use a public transportation information app.