Is there a small business development person in your city? They can probably help you with ideas and can provide some local marketing data or partnerships available.
Beer and food is not the answer. Parent with a food truck in the parking lot and be done. If you’re going to go after a late night crowd - a hot dog cart in the parking lot after 9pm or something when people get hungry after drinking.
Water, cokes, candy bars - just enough to keep someone from leaving while still having a long shelf life is what I’d target.
BYOB after 8pm or something may be helpful for older crowds. Not sure what the permitting or insurance looks like around that.
Perhaps you put an advertising pin in a popular bar around the corner? Set it at straight $.25 or $.50 with a sign to come play more. Give them a $2 discount on an unlimited rate if they bring in their bar receipt or something.
I haven’t seen you post your rates but I’d target something like
$6 hr daytime
$12 unlimited until X time - 7pm?
$8 hr at night
$15 unlimited time after 7pm?
$20-22 unlimited all day
Only 5 games year 2000 or later. Only 8 games from the 90s. So 60% of your pins are 80s or earlier.
Anyway you could partner with the brewery that has 5 pins? Rotate games from your place so they keep a fresh lineup?