I don’t understand why you wouldn’t tell them, surely waking them up at four am and bundling them in the car for a holiday they know nothing about is asking for them to meltdown/be confused. Even if you told them the day before - my little one knows all about holidays in advance and there is no issue. Also how did the kids not question suitcases being packed?!? This makes zero sense!They haven’t told the kids they’re going away? In a nice surprise kind of way, or in a not even bothering to tell Vesper she was going to have a sibling kind of way?!