Sorry. I wasn't paying attention.

I have not done it, but the best way I have seen work is for you to, um, "politely ask" (shake down, extort from, etc.) a vendor that you do a lot of business with and that will be at CES to give you a free pass. Many larger vendors will have a batch of free passes to give out to their customers as perks. At least they used to, in days gone by...