Anonymous wrote:One of them might have felt sick from that long drive and needed to lie down or a toilet. They may not want to tell you this. They probably feel bad that they surprised you and are trying to make up for it by picking up the kids for you. I'm sure it won't happen again, so I'd let this go and invent an errand for them to run for you, and later - send them to daycare and then to get ice cream. Or go out yourself if you need the space.
But here's where that doesn't make sense. If they arrived at 11:30, that means they left their house around 7/7:30. (OP said 4-hour drive.) So even accounting for, let's say, an hour of anticipated traffic, they shouldn't have left the house until NOON if they wanted to arrive around 5.
That doesn't add up. No need for them to leave that early unless they PLANNED to arrive super early.
Now, it could be that they thought they'd be hitting up an outlet mall or something, and a stomach cramp came up. No problem. **Call your son and explain.**