The Phoenix Raceway is just southwest of Downtown Phoenix. You can stay downtown or anywhere closer to the venue for easy access to and from the rave each night. From Downtown Phoenix it's about a 30 minute drive, or 45 minutes from Scottsdale.
There is a list of things you can and cannot bring into Decadence Arizona on the festival website here. Note that this festival does not allow totems.
You should wear whatever makes you feel confident and beautiful! savormeditation just dropped a collection of gorgeous New Year's Eve inspired pieces that would be perfect for Decadence. The weather in Arizona in late-December is pretty cold, even for the desert, so I recommend packing some longer pants or chaps that will keep you warm. Here are some of my favorite pieces from savormeditation that you can wear to Decadence Arizona:
heaven is a hologram iridescent cargo pants
tripp out rainbow reflective top and skirt
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