1. Once school is out, college town biz can sink for the summer.
2. On nights with large street traffic, put up some sandwich signs with an arrow that says PINBALL!! leading people down to your biz.
(of course, you don't have a permit, but on a Saturday night, all the ordnance officers are off duty. Don't put your address on them, so you can deny any knowledge of them "No, I've not seen those signs. There was an out of town league here that night, maybe that's something they do....." Hell, you could put in small letters "NYC Pinball League" on them to further your disinformation. )
3. Make a trail of glitter sugar from the main part of town to your biz. Kids that are high will follow anything that sparkles.
4. Hook up with a local amusement distributor and be the first to unbox the latest game. Issue press releases for all local media like it's amazing news.
5. Trade radio advertising dollar-for-dollar with gift certificates for your biz. The radio station will have people call in to win and you will get valuable air time. Radio stations LOVE doing call in contests.
6. Rent the whole place out for private parties. Make sure you have the number for the local out-call services, limo services, and that kind of thing.
7. Put ads in old-people events like: classic car shows, art fairs, ham shows,