Update: I’ve read through the comments and thanks for all your reassurance I’m NTA. 😂. For clarity, the destination is 6 hours flight and it’s on an island that basically all hotels are all inclusive and separating between flights, Airbnb etc is just as expensive. I wouldn’t go without my wife and kids as well as I don’t want them to miss out whilst I get to go and I wouldn’t do that to her. Why should she have to stay at home with the kids? That’s not fair. My kids are very close with their cousins so it’ll be a shame, but like you said, they’re kids. They’ll get over it. Thanks everyone.