Holiday craft show food

how many days, hours, # people, what part of the country are you in?

Different parts of the country have favorite foods? 

In the past 12 years, I've done, um, about 12 events similar for no charge. Unfortunately no gain either
 

I'm assuming families but heavy on women.....is there a place for them to sit and eat?

I'm also assuming you don't have a restaurant or catering business to use leftover food......correct me if I'm wrong....

So, it's OK to run out of one thing.....if you can freeze leftover unused food that's a bonus.

Western PA......do you have an apple cake or apple butter bar or you get the point.....covers breakfast and dessert....stays moist & bonus made on a sheet pan just needs to be squared.....can be prewrapped if you are limiting staff.

Chili or some such thing....freezes well, you can have fritos and make chili/frito pie.

Veg option....more and more vegheads are abounding.   Veg Soup, tomato base....again freezes well.

BEVERAGES, this is where you make $$$$$$

This is vending, not catering, correct?   500 ppl......not worth getting out of bed for. Food at something like that is a total after thought.

Yes you may sell a few hot dogs or cup of soup, few bottles of water. People attending in the am will have already eaten breakfast, people arriving after lunch time will have already eaten. They are there to browse and leave. I would say the crowd would be mostly older women and moms with little kids in tow.

Handheld pimped out sweets......

for example rice crispy treats with chocolate and sprinkles or nuts or jimmies or white chocolate or ........at an indecent upcharge.  you are out nominal amount.....

bottled drinks you can return if not sold

I'm leaning on Buba's answer.....he's been around the block a bunch, but as you are a startup and want experience, this is a good opportunity.  Just play it smart so it's advantageous for you.