I was given this key, along with an attached seating assignment, at a wedding reception. While many guests assumed it was merely a decorative key, a few clever guests quickly realized the truth. The bride and groom had ensured that guests would have a key to an important treasure, one needed for their own celebrations!
What does this key open?
It's common to avoid sharing photographs of a key blade because doing so reveals a lot of information about the lock.
The provided photograph does a poor job hiding the shape of the key blade.