The objective of the fair is to showcase local companies & educate students not for instant recruitment
2486 out of 43386 applicants were recruited in last year's fair
http://www.thepeninsulaqatar.com/qatar/147836-only-57pc-career-fair-appl...
I see there is great change for recruitment of young expatriates in places like QMA, DFI and some QF civil organization
So don't hesitate , and go there