Possible Clues:

• One of matching pair
• Spanish island known for raves
• Island WSW of Majorca
• Island's northerly capital importing trade
• Holiday destination in Balearic Islands: zany antics introduced
• Resort island ESE of Valencia
• One with business at a foreign resort
• Island state housing business
• Works informally in fine up-and-coming holiday venue
• One with business on a Balearic island