Originally Posted by
SkyLich
Doesn't a refundable ticket typically require cancellation prior to a boarding pass being issued?
No. Checking in and then cancelling is no big deal. It's probably not even particularly uncommon for fully refundable tickets.
FWIW an agent can "uncheck" you in quite easily.
Originally Posted by
SkyLich
How on earth would they ascertain intention?
Why would they need to? How do you think fraud detection works?