We will be taking a 6+ hour road trip for a beach vacation we will be leaving on a Sunday and returning on a Thursday.. We will be in a small car and we also have a 3 year old to pack for. Our stroller takes up the whole hatch so we may have to leave that at home since we will be packing for the 4 of us, baby items and beach items. What are musts to pack for baby besides the diapers, mini play pen, wipes clothes diaper bag items and stuff to keep baby cool on the beach. She will be 3 months and 1 week old when we go.