From the author:
Since my kids are two and five years old, still within the Family Boarding age range, I have boarded with Family Boarding on every single flight.
So yeah, it’s probably not worth it for him…and probably not for another four years.
But for those of us with kids older than 6, then it’s worth it. I don’t want to have to add “Check into Southwest” into my touring plan; last year on a trip to Vegas, I was 10 minutes late to check in and we got “C” boarding. Fortunately, my wife and I found two seats together, but we were prepared to have to fly separately.
If my kids were teenagers, I’d probably think differently. But with kids aged 6-12, I automatically factor in EarlyBird when comparing airfares and flights if Southwest has the best flight.