Disabling the chime is a reasonable question that thousands would love to have the answer to. The additional information regarding the wearing or not wearing it falls into the catagory of, "it's better to have people think that you are stupid than to open your mouth and prove it".
On a public forum you are open to all comments so the OP would be well advised to not to have added any comments regarding his seat belt wearing habits.
2014 Audi A6
2010 MDX Advance, Ent.
2005 RL - sold.