
Others have already given most of the important advice, but I'll chime in... Events are all mostly networking and advertising, and the RPC is a great tool for both! Give-aways and contests are great incentive for people to come, and performers can provide some extra entertainment. If you post up a wanted ad here, it's pretty easy to find IC dancers, musicians, and poets who'd love to perform and give people something to do other than chat (as well as give them something to chat about).
Having IC waiters and staff is also really nice and helps attendees feel involved. As has been mentioned, Valentine's day is coming up and romance and holidays are always great themes to get people involved, and fit well with the whole cafe/restaurant thing!
