No, the best way is to change your currency in Bali because you will get a higher exchange rate in Bali. If you don't have someone pick you up at the airport, all you need to do change enough money for transportation at Bali airport. Please note! To avoid money changer scam, please exchange your cash at Bali authorized money changer. It would help if you never tempted with a higher exchange rate with an unknown money changer. Find here, Best Place To Exchange Money In Bali