The question regarding sponsorships is not as much about tax deductibility. It is more about whether the payment results in advertising opportunities. While the sponsor may not be eligible to receive a tax deduction as is true for a 501c3, their payment could still be defined is paying for advertising - which becomes taxable income to you. And there is the problem.
As long as the "advertising" you offer to these organizations does not involve more than name, logo, and contact information - and mentions of thanks for sponsoring without offering endorsements or inducements to use their services - you should be fine. Please locate a copy of the ASAE summary of permissible activities in the archives I have shared many times.
I am not concerned about "VIP" seating since this is a free event.
John
John H. Taylor
919.816.5903 (Cell/Text)
Big Ideas; Small Keyboard