Cricket is a requirement for proper Australia Day celebrations, even when said celebrations occur while you're in Nicaragua. We went along with it. Few pulperias reliably stock cricket bats, so plan on making your own. Also, it is best if the rules are explained in humorous, half-sensical Spanish, because no one is going to understand them anyway.
Intimidate your opponents with flying-crane, rum-hand cricket stance.
Scald them with piping-hot sopa de mariscos from Nereyda's birthday.
Or, just wait patiently until they give up and play futbol. It won't be long.