Planning a reunion after-party on a holiday weekend means you are competing with everyone else's holiday plans. Venue deposits, catering holds, and late-night setups need to be locked down months before anyone actually shows up.
If the total hits about $1500, spacing out those costs gives you room to breathe while you collect RSVPs or chip-in payments from classmates.
Remember, a 0% intro period is a strict deadline, not free money. If you still have a balance on the card after 18 months, regular interest rates kick in on whatever is left over.