We usually have about 5 official tournaments. The attendees vote in advance as to which games will be played in the tournaments. In addition to the tournaments, I'd say somewhere between 30 - 50 different games are played during lanwar. You can always notify the staff you are starting up a new game. Don't forget to bring your stuff.
Someone always forgets patch cables, outlet strips or hardware drivers.
Show up for the event and tournaments on time. Be sure to recheck the schedule one week before the convention. Make sure your computer is working and that your ethernet card will get you on a network ahead of time. Understand why lanwar exists. Lanwar is so fellow gamers can have fun.