@chirpbirb disclosure: I wont go to the US so DefCon is not an option for me
DefCon is full of cool people and they'll be supportive and probably welcoming enough. I know when I go to cons I latch on to people to make friends and do that.
But also - if your brain wont let you bring personal devices - image your computer/phone, factory reset it, and then wipe it daily before you return to your hotel. Or whatever your brain will allow.
Lots of hackers suffer from the Paranoia Brain (including me), but it's worth trying to find the workarounds for your paranoia, because community matters!