Southwest gets a thumbs up from me too. Because I travel solo I didn't see the need to do the early bird check-in nor 24-hour prior check-in. I must have a window seat and there was always one available. However, since sitting next to hubby is a must I agree with sammyb and never2many, secure your slots in group A and you two will be fine. My first flight was packed, but those in group A got on first and had the pick of the seats before B and C could board.