If your pax are willing to throw in your kids' part then I'd hold on to
them as my dearest friends. I don't know many folks who would do that...

Like I said it is easier to just divide it up between the adults but to
each his own...

Jon Kraus

Mike Granby wrote:

I don't have to pay for the kids. The rule says that "[a] private pilot
may not pay less than the pro rata share of the operating expenses of a
flight with passengers [...]" It doesn't say anything about who pays
the rest. As long as I pay 20%, the pax can divide the rest up among
themselves as they like.