870,000 miles ??? Your in great shape, no worries!
Stephanie, you can call the service department for an appointment or see if they can get you in that day. They are very friendly and easy to work with. I have 2014 Convertible S that the service department has taken great care of.
Note that this is the place to ask questions about the dealership, not to ask the dealership about your car. You'll need to contact them directly via their website, unless they happen to monitor this forum (most businesses don't).
We bought a 2010 in good shape too. Had a bumper to bumper check up there. It wasn't cheap...$777.00.
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