The Anton Yelchin page which is promoting that competition is also promoting the "official" Trek into Darkness page. This casts some (more) doubt on that competition which sounds a bit too good to be true. You need to like the Anton Yelchin page to enter the competition.
Yourself and FIVE friends flown to the premiere? Given 60,000 dollars? I'm starting to doubt this. Maybe it's just an email harvesting scheme.