instead of me just sitting there, twiddling my thumbs and feeling all embarrassed.
embarrassed? No way man... it's badass. Show up like the badass you are. Set out the table like you're expecting a dozen people. The worst case scenario is... the few people that come through the door that WOULD LOVE TO PLAY but weren't planning on bumping into a BADASS gamer on their lunch break... WILL ask for your contact info and find out when you're doing this next.