I voted 8 days/7 nights because that is what our last trip was and what the upcoming one will be. Truly it is because of the great airfare we have found in our area. I would love to stay even longer, but this is the max we can do at this time. As our kids get older, the trips will probably become shorter because we will have to pull them out of school due to DH's job- no travel in the summer for us!