Anybody have any personal experiences with Allegiant regarding carry-on bags that had not been paid to bring onboard? I'm curious as to their procedure for monitoring bags that are being carried on as paid vs. non-paid ones. I would think that there would possibly be some sort of tag or sticker issued indicating that the bag had actually been paid for at some point. But, The couple of times that I have flown Allegiant, I don't recall ever seeing tags or getting one myself. So, would it be taking a big risk to confidently just proceed onto the plane with a bag, in addition to the free "personal item"? Or, would the baggage police detain you and extract your credit card from your wallet and/or deny you entry onto the flight if you refuse to pay to either check the bag or carry it onboard?