On the following links you can find a list of events in Zug:
www.zug4you.ch/Events
www.zug-tourismus.ch
http://veranstaltungen.zug.ch/veranstaltungen - German
www.chollerhalle.ch - German
www.tmgz.ch  - German
www.burgbachkeller.ch - German

Restaurants
The choice of eating places ranges from a country inn to a gourmet restaurant. Specialities of Zug and the rest of Switzerland, as well as international dishes can also be found. You can find the restaurant of your choice in the municipality of your choice on http://www.zug-tourismus.ch/en/restaurant