I'm putting on a house and disco festival this summer with zero experience. Any tips?

I've been throwing small disco and house parties in Upstate New York over the last few months. I wanted to do an outdoor one this summer and found a great location.

One evening I thought, it would be amazing to have an awesome DJ come up and headline this thing to make it feel like a REAL event. Fast forward 2 weeks, I've booked DJ Spinna to play the headline set and am now putting on a small day festival complete with a market of local vendors, line up of DJs and 500 tickets to sell.

I'm not trying to get rich, or even make a profit. I just want everyone to have a great time and for me not to go broke in the process. Anyone else accidentally started a festival? Any advice? Cheers