Family advice: I pay for our family vacations. My brother-in-law's bad attitude is ruining it for me.

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Dear Pay Dirt,

I am the oldest and make a much better living than most of my siblings, especially my younger sister, “Erin.” I usually cover her and my parents’ expenses when it comes to family vacation. It is a hefty price tag but it is worth it if everyone enjoys themselves.

Which leads to my big problem with Erin’s husband and his teenagers. My brother-in-law is a sad, sullen lump who gives the silent treatment when he doesn’t get his way. When he’s doing this, he insists on still being around everyone, spoiling the mood because his mood is spoiled. His kids are even worse. They are addicted to their phones and every other word out of their mouth is a complaint