Everyone likes a bunny (especially if you're a big art fan living in Rapture). By that logic, everyone must love an Adult Rabbit Mask. I can't think of any holes in that logic. As far as I see it, everyone, from people who just enjoy a good masquerade or Halloween party to people ringing in the new year in a wonder city under the sea have a reason to check this mask out.
The Adult Rabbit Mask rekindles memories of Peter Cottontail and Peter Rabbit and of the utopian inhabitants of Bioshock's Rapture.