Late autumn in Japan means crisp air, red maples in Kyoto, and fewer crowds than cherry blossom season. It is the best time to wander temple gardens, eat steaming bowls of ramen in small alleys, and actually hear yourself think while you travel.
A trip like this usually runs about $4200 for flights, hotels, and food. Spreading that cost out over time makes it manageable if you want to lock in your bookings before prices jump.
That intro window is a deadline, not free money. If you still have a balance left when the 0% period ends, standard interest will kick in on what you owe.