Just experienced my first EDC, and it was worth every penny.
It's unlike anything I have every seen or experienced. Insomniac does a great job to transport you to what feels like another world. Their stages are diverse and get bigger and more unique each year.
TIPS:
VIP or GA: I really feel VIP is NOT worth it. Basically you get your own entrance and a lanyard. The GA lines may look crazy, but move relatively quickly. Plus the VIP sections are so far away from the stage (esp. the main stage). I suppose it's cool to be slightly elevated and see everything. But no one is dancing, and I personally want to be in the sea of people...the energy level is through the roof.
Parking: no matter what you do, be prepared to sit in your car for 1.5-2+ hours while trying to get out of EDC if you stay till the end (which you should anyways). My group rented a car, which I feel is the best option.
Locker: Heavy recommend renting a locker for the 3 days and leaving behind something so you don't have to hassle with it at the security check points each day (ex. chap stick, extra shirts, etc.).
***MAKE SURE YOU DOUBLE CHECK YOUR LOCK IS FULLY SECURE!***
Stages: Even if you're not a hardstyle person, I still recommend checking out the BassCon/Pod. Easily the loudest and most hard hitting bass I have ever heard. It literally shakes my entire body.
During my 3 days, I didn't encounter anything negative. So much to see and do that I wish it was 5 days long. The line up was well balanced so I didn't feel torn between different stages.
Can't wait for EDC LV 2014!