The battle over using a tampon or a pad mainly refers to the risks of TSS, toxic shock syndrome. This should not be of concern with a rhinoplasty unless you think that after the surgery you would not be able to change your tampon in a timely manner. It is safe to use a tampon during this type of surgery, but a pad may be your safest bet. Speak with the nursing staff and/or your surgeon beforehand as they may have a preference.
Web reference: http://www.capefearaesthetics.com/details/plastic+surgery-19