Good weather? Rent a bike from the North Avenue beachhouse and pedal your way around the city. There's bike lanes all over the place.
Too fat? Use public transit. Most of the good stuff is reachable by transit.
Idiot? Rent a car. Have fun parking.
As a general rule, most sporting event tickets in the city are bought up by ticket resellers. Welcome to the wonderful world of markups. You're better off buying from scalpers.