SEMA is starting to tighten up their attendee policy a bit; such as not issuing so many tickets per company etc.. You pretty much just have to have a couple forms of business ID to prove you are in the automotive industry. Another thing I like about SEMA is they don't allow people under 16 to attend the show, so you don't have to worry about fighting strollers. I have went to the show for the last 6 years and it gets better every time, with the exception of this year. It seems the economic crunch has let to less exhibitors and more attendees. I noticed there was fewer industry parties and give-aways also. There was a lot more tundras there this year though.