WiseGuys has the Grand Funk Railroad and Jefferson Starship presale passcode: While this limited time presale opportunity exists, you can buy Grand Funk Railroad and Jefferson Starship show tickets before the general public. 
If you don’t purchase your tickets to Grand Funk Railroad and Jefferson Starship’s show in Gary, IN during the pre-sale you might not be able to get them before they become sold out.
Here is what we know about the Grand Funk Railroad and Jefferson Starship show:
Grand Funk Railroad and Jefferson Starship
Hard Rock Live Northern Indiana
Gary, IN
Fri, Dec 2, 2022 06:30 PM
Onsale to General Public
Start: Fri, 08/05/22 10:00 AM CDT
End: Fri, 12/02/22 07:30 PM CST
Unity Member Presale
Start: Wed, 08/03/22 10:00 AM CDT
End: Thu, 08/04/22 10:00 PM CDT
You can use the following pre-sale codes and information to get tickets:
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Buy your Grand Funk Railroad and Jefferson Starship tickets early
