Geek Dinner after DevDays was very nice! At the start only a couple of people registered, so I made reservation in the restaurant for about 10 people. The final result was 28 people stayed for dinner, and only because some people decided at the last moment not to come. Phew. We did't have enough free tables to seat everyone directly, so some had to wait.
Next time I think I will use a web service to ask people to register :)