Interesting discussion.

I am flying to Hawaii next week with my family, total two adults and three kids. I selected seats together when booking tickets in economy a few months ago. Now when I check, the seats assignments were changed. One adult and two kids are still together, one adult is separate in an aisle seat, and one child (9 years old) is separate in a middle seat away from everyone. The flight seat map is full and there is no way to move.

What is the flyertalk consensus I should do when we board the flight?