Mexico City in the late spring is a mood. The jacaranda trees turn the streets purple and the heavy summer rains haven't quite arrived yet. You spend your mornings in the quiet halls of the anthropology museum and your nights hunting for the best al pastor on a street corner in Roma Norte. It is one of the few places where a world-class meal often costs less than a coffee back home.
High-end trips usually require a big pile of cash upfront, but we can play this differently. By timing your booking for the late-spring shoulder season, you get lower prices on flights and stays. If you use a specific card to handle the $1800 bill, you can pay it off in small chunks over time without the bank taking a cut.
The 18-month window is a hard deadline, not a gift. If you still have a balance when that time is up, the standard interest rate kicks in and things get expensive fast. Make sure that $100.00 is paid every single month to keep the debt from growing.