you can invite up until 40 people (the rest should be in guest list) and ask people to rsvp only if they are sure about coming...

i'm open to give this call to whoever suggest me free beers :)

about me- Sagiv Ofek - Senior Code Ninja with super-hero coding skills. Playing with all the cutting edge technologies. Willing to code for a good beer. 

Sagiv's FB page - https://www.facebook.com/YabaDabaD00