Quote Originally Posted by Slotspert View Post
Early Bird is a MUST if you want to secure overhead baggage space on a busy flight (normally Fridays and Sundays) and you just wait until you get to the airport to check-in (e.g. the dreaded GROUP "C"). Otherwise, you can usually get at least a "B" group or even an "A" group if you check-in exactly 24 hours before departure. I have had the EB "vanish" a few times when I change a reservation which is solved with a quick call to customer service.
I was a bit lax checking in on both legs of my recent Vegas trip. Late by 4 minutes for the trip out and got C11 and late by about 10 minutes for the return and got C23!

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