A sip-and-see is meant to be the low-stress alternative to having visitors drop by your house every day for two months. You pick one weekend afternoon, set out some easy finger foods, and let friends and family drop in during a casual two-hour window to meet the baby.
Because you are working with a hard date, lead time is your best tool. Ordering bulk drinks and paper goods weeks ahead keeps costs low and saves you from paying rush shipping fees on the stuff you forgot.
A 0% promotional rate is a grace period, not free money. If you still carry a balance after the 18-month window closes, standard variable interest will kick in on the remaining amount, so keep your monthly payments consistent from the start.