Pack plenty of light-weight, high-calorie food for everyone.Hiking in the backcountry usually isn't the time for s'mores and bacon. If you're traveling light, you want to choose food like reconstituted soups and stews that are made with water, or commercially packaged freeze-dried food. You can also learn to dehydrate your own. Pasta is also a commonly eaten hiking food.
Pack as a group, not as individuals.Everyone should bring their own sleeping bag, and there should be enough tent space for everyone present. That much is obvious. But you don't want to end up in the backcountry with three people and four tents, or five camp stoves and only one canister of fuel between the three of you. Pack smart. Compare gear with your group and share the essential equipment that you'll all be using, and space it out among your packs.
Check your equipment inventory.It's important to make sure all gear is in working order. Give yourself time to test equipment and replace/repair anything that is not working properly. Remember, if an item breaks, you will still need to haul it back.