Feeding a crowd to celebrate your graduate is all about timing. If you wait until the week of the party to buy everything, you'll face empty shelves and a massive bill. We need to split your list into what can sit in your pantry and what needs to be fresh.
A typical backyard bash runs about $1,200. By starting two months early and spreading the cost over a year and a half, you can pay just $66.67 a month.
Remember that this promotional rate is a temporary window, not free money. If you still have a balance on your card after the 18 months are up, the standard interest rate kicks in on whatever is left, which will quickly make your backyard party much more expensive.