Where should we do city vs. city challenge?

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On May 14th, quizzo players from Philadelphia will be competing with quizzo players from Denver and Seattle (and possibly DC). We will all ask the same 50 questions, using the same scoring method, and see who emerges victorious. We’ll see what team takes the cake, and for bragging rights, what city’s top 5 teams average the highest scores. I need to know where we should do this. Somewhere I can fit 75-100 people. Also, should I charge a small fee (maybe $5) and get a band? Drop your ideas below.