Pile up movies onto a laptop, take a book an ipod.
Hopfully it has inflight movies :/
Are you going down to the harbor? If so, ask your folks to drive down to Coronado Island and go to the Hotel Del Coronado. Their food is awesome. Then go to SeaWorld and have luck that a seagull will fly infront of you.
No seriously, while I was at SeaWorld a seagull flew infront of us. I fed it mah popcorn.