Originally Posted by
pipeliner
I ran into something similar, although a bit different, flying with my college age kids in F around Christmas. A couple in front of us had two lap infants so the cabin crew said they couldn't sit together (in case we had to deploy oxygen masks). One of my boys ended up swapping seats with one of the parents.
For as long as I have been in the industry, the rule has been no more than 1 infant in a set of seats due to the amount of emergency oxygen masks in the PSU. There is 1 extra mask in each PSU.