Well, I'll say this- what kind of apps and how many is she serving? I've been to plenty of events where the apps were actually more than sufficient to serve as a meal!
However, that being said... a GR is SOOOOOOOOOOOO not a "must attend" event, and if you don't want to go, don't.
Or if you do, once the reveal is over, leave. I don't see why this is an event you have to stay a long time at.