The cool thing was that we were suddenly those people who got to board first. But we were also those people who had to balance two trays on our lap during meals while the other occupied a bored baby.
He was really good, actually. No screaming fits or any explosive poos. And in good spirits despite being woken up half way through his normal night to be dragged through xray machines and various lines.
No seat belts for babies on domestic flights, by the way. A bit surprising.