One surprisingly inconvenient thing for travelers in the Philippines.

For travelers, cash is the only payment method, but there are quite a few places, or rather, a lot of places, where you can't even get change for 500 pesos, let alone 1000 pesos. In this case, you can't spend your money even if you have it. For example, if you buy a hamburger and a cola for 80 pesos at Angel's Burger, they can't give you change for 920 pesos. You absolutely must prepare small bills by buying something cheap at a convenience store or franchise.