Really people get mad if you stare at them? That is why the dress up correct? It is the only time a year they can let their nerd out.
Nah, I was just kidding...
Also, bring some cash, the ATM lines can be very long as well...
or stop by an ATM before the con...
even though lots of vendors take cards, it's always useful to carry some cash,
that will also make yourself a little more cautious on your spending...
I always make a list of things I'm looking for to buy at the Con, and have some extra for unexpected deals...