I planned to be there a few hours, but my boss said it is fine with him if I spend the whole day there, so I went for that option. :)
There was about ten booths, a pretty small trade fair. Linux.hr team were handing out some Ubuntu CDs, and since I do not know anything else, I was showing people how Watir works. I guess I showed Watir to about 10 people that day. Not bad.
Since Ubuntu has live CD, I tried it on my Mac, and it worked fine. Wireless was not working, and Linux gurus said that Ubuntu probably does not have drivers for my hardware.
There is also a funny story. I was entering the fair and saw a big penguin walking around. Of course, it was one of the linux.hr team, so he approached me and said to follow him to our booth. So, I am walking behind a giant penguin, and at the entrance they ask me if I have a ticket. I said: "I am with the penguin", and to my surprise they just let me in. I newer thought that knowing a penguin can get you any benefits.