Fancy Dinner

I was staying at a high class hotel with a friend.  People were taking pictures but she did not want her picture taken.  We were going to a dinner party in the evening and I could not decide what to wear.  I thought a suit would be fine but my friend wanted me to wear a tuxedo.  There was a group of men sitting at a table and I asked them for advice.  They told me definitely wear a tuxedo because the event was too fancy to wear anything else.