If you know enough people in the P2P trading community weather online or in real life, there's no need to be completely beholden to centralized exchanges.
A decentralized exchange can connect you to buyers and sellers instantly, you don't need to physically seek out strangers to trade with.
Is there a booth stand I can buy a hardware wallet?
Be very cautious when buying hardware wallets from retailers and random people at events. They are delicate devices and should be gotten from legitimate sources.