So, dust off that Flying Blue login, check your eligible miles, and decide whether multiplying is the right move for you. With options to scale up as high as 20x (plus that cheeky 30% bonus), this could be the best time in years to build your balance. If you’ve been dreaming about sipping champagne in business class or just hopping around Europe on weekend getaways, your Flying Blue miles could be your golden ticket. Celebrate like it’s your birthday, even if it’s theirs.

If you’re looking for the fastest and cheapest way to get to Amsterdam Centraal Station, the train is your best bet.