In Game of Thrones The Card Game, some cards say that they can be played as an attachment to the house card instead of being played as a location. What are the advantages to this?
One way makes it an attachment, the other makes it a location. Which way you would want to play it depends on what your opponent is likely to be able to do. If they can discard attachments (such as with the card Bought and Paid For), you would want to play it as a location. If they can get rid of locations, play it as an attachment.
The choice just makes the card flexible.