So we decided to ask our relatives to join us for a trip to Disney, 6 families in all... Planning for next summer, Any tips, advice etc. One family has 5 members, which throw a loop in accomodations, not sure what to do....

, i have to agree with the PP, don't try to do much as a whole group outside of a few meal meetings and other random planned out things such as pool days
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hanging out. Typically this is when some child will decide that a 3 hour hair wrap is in order and since we are planning to vegitate anyway no one is stressing the legnth at which it can take an 8 year old to choose beads for said wrap. 
Liquor. Bring lots and drink lots.![]()
Make each family responsible for booking/paying for their own room, tickets and airfare (if needed). You won't be stuck if something comes up and someone needs to adjust dates or cancel altogether.
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