We did not purchase seats for them and instead balanced them on our laps. (havebabywilltravel.com)
Regular tickets, though, have a variable price in points because you can use your points to purchase any seat on the flight with no capacity controls. (rewardexpert.com)
Since airlines are flying at 80 percent capacity, they have no incentive to lose purchased seats in place of rewards redemptions. (petergreenberg.com)