For our task to get some buzz around our game: we should create a guerrilla stunt. So maybe we can link this to the name of the event> PICNIC. It depends on our concept but we have to get people moving in the city, gather and during PICNIC. So maybe we can do something with literally Picnic-elemtents spread over town.
Second idea: these people are culturaly developed in some way. Maybe we can gather pictures of Manet (see attachement) and brand it with PICNIC, put a mobile phone in the mans hand and post it. There must be more picnic-like pictures/ painting etc. Just to make people wonder and create a smile.