True, true... I dont suggest cargo shorts, although I am the first to wear them - LOL. At least DONT wear the sandals or flip-flops. Besides that, you should be breaking up your stashes of cash throughout your body, and socks with shoes provides yet two more places. I always carry a stsh slid down each sock into the arch of my foot that I can access easy as backup money.
And no offense to anyone, but for Christ's sake, dont scream out TOURIST by wearing Hawaiian shirts or the lile - you're already white, how much more attention do you really want? Jeans and a tshirt or maybe polo are decent.
B