As noted on the Golf ATX website, this year’s Firecracker has been moved one weekend later, July 10-12.  Statement from Golf ATX:

2020 Firecracker Participants:
The City of Austin and Travis County have made the decision to close all Parks for the 4th of July weekend. This impacts all Golf ATX properties and the Firecracker Golf Tournament scheduled for July 3rd-5th. In an effort to continue this storied tournament’s history, the event will move to July 10-12. We understand you may not be able to participate during these new dates and can process a full refund for exempt players that completed registration. If you would like a refund, please contact Jimmy Olivares at (512) 477-6963 or email Jimmy.OlivaresIII@austintexas.gov. Players that have qualified and will be able to play in the event must complete registration by July 6th. Thank you for your understanding and cooperation and for supporting the Firecracker and Golf ATX.

Also note that the Firecracker Qualifier was held on Monday, June 29, with 54 golfers advancing to the event.  The cut line was +4 and medalist honors went to Matthew Kemps who shot 5-under (66).