Does next year mark a milestone birthday or anniversary? Or perhaps you need no reason for a celebration other than the sheer pleasure of grabbing a holiday with your oldest friends. Either way, now that the summer’s over and the kids are back at school, if you are thinking about planning a big group holiday for 2019, this is the ideal time to set the wheels in motion. Book now to eliminate the stress of finally agreeing on a villa, only to find it’s unavailable on the dates that you want! Once you’ve picked the perfect villa for your party,…