November is the sweet spot for Savannah. The heavy summer humidity finally breaks, walking the oak-lined historic squares is actually comfortable, and hotel rates drop before the holiday rush hits. You get the fresh oysters, ghost tours, and riverfront walks without melting in the heat.
A solid three-day weekend runs about $1350 for travel, a central place to stay, and plenty of seafood. Instead of taking the whole hit to your checking account at once, you can split that bill into quiet monthly payments over a year and a half.
Remember that a 0% intro period is a strict deadline, not free money. If you carry a balance past the 18 months, regular interest applies to whatever remains, so stick to your monthly target until it is paid off.