There are several parking options at the event. See this map and guide:
1) Pipeline's building (BB&T) has visitor parking on the 2nd floor. This has limited availability, so this is best for those who get there early. There is a pay station on the way out.
2) William F. Poe Garage (behind Glazer Children's museum) has hourly parking.
3) Street parking is also available all around their building/Downtown Tampa.
4) Lyft or Uber is also a great option for a short ride from lots near the location (which are also easy by foot), including near the Oxford Exchange, UT, and Curtis Hixon Park.