Skimpy clothing and swimwear should be confined to the beach and resort pool areas. Topless and nude sunbathing is prohibited. Attending church is an important part of Cook Islands society, and the hymn-singing is wonderful. Visitors may attend church on Sundays, but should remain outside if they've only come to hear the singing. If you go into the church, it's polite to stay for the entire service. Women should have their shoulders covered and men need to wear shirts. All drivers need a Cook Islands license, which can be obtained from the police station in Avarua for NZ$10 on presentation of a driver's license from your home country.