I had a mini meltdown a few trips ago. I was 5 months pregnant which may have played into it a bit.
My parents and a niece came with us. I did ALL the planning as far as FP's, itinerary, etc. Which theoretically is fine, I actually like that. But, everyone else decided to come about 30 days in advance so it was a bit of a scramble. Keep in mind none of us are Disney novices. We have all had multiplr trips so it's not like these things were unexpected.
While there DD11 (14 now) complained daily about the heat, crowds, and lines. My dad complained an out the heat, crowds, lines, and how expensive everything was. My mom complained about the heat, the crowds, the lines, how expensive everything was, MK closing early for
MNSSHP, and my dad. During our one evening at MK my dad refused to go at all, we missed all our FP's because nobody would get ready to leave, DD11 and my mom left without doing anything because they didn't want to deal with the crowds, and despite making several suggestions DD7 didn't want to do anything. By the fourth rejected suggestion I just lost it. I threw my hands in the air, turned around, and just speed walked my way back to the bus crying. After waiting for my bus for a few minutes I calmed down a bit and decided not to let them ruin my evening so I went back in with nothing but my magic band and DS2 and I went on all my favorite rides just the 2 of us. We stayed out until about 1AM enjoying extra magic hours. It was glorious.