Croatia in September is a cheat code. The massive summer crowds have gone home, the Adriatic sea is still warm enough for swimming, and the prices for seaside rentals start to drop. You get the ancient stone streets of Dubrovnik and the waterfalls of Plitvice Lakes without rubbing shoulders with thousands of cruise ship tourists.
A trip like this usually costs about $2800. Instead of draining your savings all at once, we can map out a plan to pay for it over time. By using the right card, you can split that cost into monthly chunks and avoid paying interest altogether while you pay it off.
Keep in mind that the 0% intro APR for 15 months on purchases and balance transfers is a hard deadline, not free money. If you still have a balance on the card when those 15 months are up, the standard variable APR kicks in on whatever is left, which will quickly eat up any savings you planned for.