Not sure what the adult/kid ratio is but it is always good to let the crew share the chores. If you have 4 couples let one couple be in charge of meals for a day. As the experienced crew you can do the first day and show them the ropes, then let them take turns. We do not have large groups but it works well for 4-6 people so just expand it. We do not bring pre cooked food from home but with 10 it may be worth the hassle to pack at least a few meats etc..