I don't travel and I've never been to a similar event before. Please help people like me who are unfamiliar with the experience or location be more prepared?

Some sample questions to field:
  • Anything in particular I should carry onhand? Or NOT carry onhand?
  • Is it safe to leave valuable belongings in hotel rooms?
  • Know of any good and/or affordable food options near the venue?
  • How's the weather?
  • How much can I expect to spend on stuff sold at the event?
  • Can I film or take pictures?