Jag vet inte exakt hur det fungerar, men det finns en grej som heter "Share & Fly" för de som
har Franska eller Holländska Amex.
Share & Fly
Share & Fly lets you share your Miles with any additional card holders on your American Express account. Earning together is a quicker, more efficient way to your next award ticket. Your additional card holders can have (part of) their Miles transferred to you at no charge – and vice versa.
