I used to be so confused by the lack of seat numbers on my boarding pass! I remember my first flight where I panicked, thinking I’d forgotten to pick a spot. I quickly realized that Southwest does things differently—you don't "select" a seat; you're assigned a boarding group instead. On a recent trip to Vegas, I made sure to check in exactly 24 hours early. I ended up in the A-group and snagged a perfect window seat right near the front.
It’s naturally the best way to ensure you get the spot you want. If you forget to check in early, you can always modify your booking to add "EarlyBird Check-In" for a better boarding position!