Things to know for attending a premiere

• Don't wear open-toed shoes, unless you are sitting at a VIP table.
  
• Don't sit down at a table with someone else's name on it.
  
• Be prepared for photographers to look at you to see if you are famous and then quickly turn away when they realize you are not (and let's face it, not many writers make it to the 'famous' list).
  
• Don't dress down too much, but don't dress up too much. The former will make you look homeless and the latter will make you look "purchased".
  

I'll add more as I think of them. These were just the things I observed at a post-premiere party. I don't think they write books on premiere etiquette, do they?