Hi, just did the 3/4 with 2dgks, and my husband and myself. Each dgk had his or her own suitcase(they are from different families) and a backpack. My dh and I each had a suitcase and a carry on. Dgks took their own luggage (drug it themselves, they are 6 and 7) and back pack. Worked out well, packed too many clothes as laundry facilities were readily available at the Poly and on the Wonder, but was unsure what the weather would hold for us. The dgks each had a "pilot" size suitcase so it was easy for them to handle.