I agree with captainv. They're usually very well-attended events, both by airline reps and pilots. It's a great opportunity to take advantage, but if you're not already fairly close to meeting the mins at many of the airlines it may not be worth it. IIRC the most recent one held at ORD in Aug was something like $75 per person. Kinda pricy if you still have a lot of time to go before you're competitive.