Jennifer is right regarding VC or investors. They would want to see that you are already operational and making money already or with a "portfolio" of events put together already. They like to minimize their risks.
Grants are for noble causes-research, education, and innovation. Mostly, these things are not accessible for entertainment.
You can take a crack at getting some business loans through SBA. The process is tedious but if you are persistent, you just might be able to get something.
Sometimes, you can get lucky meeting people in business mixers who might be looking to partner up with people who are ready to go and have decent proposals. Attend as many as you can and mingle. Persistence and attendance of these events may just give you a chance to meet someone who would listen to your proposal.
"videos can say it like it is"
real estate investments