Probably your best best is to go to a phone shop at the airport where they'll be able to speak English. They close at about 9 pm, though. Failing that, the 7-11s don't do sims, but most mobile phone shops do. If you go to a Myfone shop they should be able to help you. You'll need your passport.
Use what talents you possess: The woods would be very silent if no birds sang there except those that sang best.