Originally Posted by
emma dog
Overhead space above C+ isn't guaranteed, especially later in boarding, so that isn't a given. However, you could have ripped the tag off the bag and just brought it on the plane. Or you could have turned around and retrieved the bag once you saw there was space.
This. Dontargue just take the tag. If it fits, great. If it doesn't it's tagged. Note that if it does fit, you need to give tag to FA. Otherwise nah handlers will think a bag is missing as count will be off.