Remember that time you trekked to the center of the rainforest just to be awarded with the vivid outline of your dad's junk? These poor kids wouldn't if they'd traveled ALONE. The worst part is he seems pretty happy about it.
The trouble with parents paying for your vacations is that they then act like you owe them something. On returning home, this child got a fake ID and her first bartending job to avoid it ever happening again. YOU feed ME beers now, oh father-slave!
It takes months to find a day that every family member's free. After endless back and forth, you eventually pick a nice, outdoor, summer activity like a theme park...then you all show up wearing the same outfit. Darn Murphy's Law!