Vacations mean different things to different people. For parents, its usually about family bonding. They have to bring their kids along, so they may as well make the best memories together. However, for people without kids, a vacation is a break with zero responsibilities, no work, and absolutely no childcare duties. Serious drama can arise when these expectations clash.
This is what's going on with a pair of siblings. The brother finally planned a vacation with his bros after years without a real getaway. It was meant to be an adults-only trip with close friends to finally relax at a resort. However, when his sister caught wind of the plan, she immediately tried to insert herself into his plans - along with her two kids. When he explained that this wasn't meant to be a family trip, she accused him of purposefully excluding her. She even rallied their parents to attempt to guilt trip him into turning it into a family vacation.
Now, I don't have kids myself, but plenty of my friends do. So, I know how much a vacation can change when little ones are in the mix. Either the parent ends up spending most of the trip juggling childcare instead of actually relaxing, or the responsibility shifts onto everyone else in the group, whether they signed up for it or not. And that's really what's at stake here: this wasn't supposed to be a family trip at all, but a rare chance for him to fully unwind.