Ships broken off pegs. Either bring extra pegs and mounts or use RE Magnets on your ships. Broken stuff should be expected in ANY event using minis. Mid-game breakage...s$&t happens. But it should be repaired between rounds.
Damage decks: Use a sharpie pen to put your initials on each card. As long as its the same initials on the same part of each card (ABC on the lower left corner for example) no one can complain about marked cards.
The mis-built turn counter. Did that with my Starter set when I didn't know/realize/understand that each ship type has a different counter (X-Wing had a TIE dial). An easy mistake for a newb...but a serious issue for a Tourny Player.
Newbs in a Tourny. Yep, it happens. Its also how newbs learn and grow. +1 Sports for using what will be an easy win into a learning experience for the newb
Note to Newbs: You are expected to bring EVERYTHING you will need/use with you...including an understanding of the rules. Until then, stay away from Events. In a Tourny setting, their is no requirement for an opponent to allow you to make up forgotten moves or let you know of mistakes you are making (beyond mistakes in rules). Or even to share templates (forgot your 2-bank template...guess what move your not making anymore).
TFG: Yep. Each game system and Event seems to attract him. The one with an apparent allergy to soap and deodorant. The guy who can't win without rubbing his opponents nose in it. The one who whines about slow-playing...until he does it himself.
Yep. TFG. Eventually their reputation precedes them and the banning commences. It's up to the community of players to police themselves and decide where that boundary lays.
Finally...it's a game. Life is always more important. The Dice Gods are fickle. Be magnanimous in victory and humble in defeat.