Seattle Bound

So we are finally making the trip...SEATTLE here we come!  I'm so excited about seeing everyone and introducing them all to my sweet little twins and my terrific husband.  My one major concern...duh duh duh...the plane ride.  We have decided to take advantage of the under 2 can ride on your lap rule, but I'm not so sure this is such a good idea!  AHHH!!  I'm beginning to wonder if we should have bought them a seat to share at least???  Just cross your fingers that it's not a full flight and we will have room to put them into their own seats!