It's pretty fun! I've gone twice, in 2009 and 2010. I opted out of last year due to the location. The guests are great and AV usually gets some big names. There are some great dealers. A lot of people come in from surrounding states. There are a lot of people that don't fully cosplay or even just dress in regular clothes, so if you don't cosplay, you won't stick out.
Starfire (Shunya Yamashita Illustration Version)~ Debuting at Otakon Vegas 2014
Mikasa Ackerman from Attack on Titan~ Debuting at Otakon Vegas 2014
Tifa Lockhart~ Debuting at LVL Up Expo 2014