Event season is coming

I have one event lined up this summer, and we are doing pizza by the slice all day long for it. Heres my question, we were just offered to do this event last year by the City and we did a lot of business at it, over 200 pizzas. These events are great ways to make some extra cash and really get your name out there. I’m wondering what are some of the best ways to get more of These lined up? any thoughts?