Do I Have to Remove my Tongue Piercing for Rhinoplasty?

You should discuss this with your surgeon and anesthesiologist -- most will probably recommend removal to prevent accidental aspiration, although if the piercing is very secure, they might allow you to keep it during surgery.

However, even if the piercing is removed, the hole will not close for at least several days if it has been present long enough to be lined with mucosa, and certainly will not close in the several hours you will be in surgery.  Ask your surgeon or anesthesiologist if they will replace the piercing for you after you are fully awake before leaving the surgery center.  

That way, you can be completely certain that the hole won't close up, and if there is difficulty replacing it, the surgeon will be able to see it more clearly than you could, and will have the tools to make sure it goes back in correctly.

The fact that it is plastic prevents the need for you to remove it during rhinoplasty surgery as only metal is a concern for the potential conduction of electricity that sometimes may be used in the operating room.  However, it is the likely preference of the anesthesiologist to remove it.  If the patient requests to leave in a tongue piercing, however, most physicians would allow it.