What will they do for a 125,000 mile checkup besides change oil and rotate tires on 2006 Ford Explorer

Will they look at transmission, spark plugs, small items? I'm a widow, and no nothing about a car. Just want to be able to inquire questions that need to be asked, but don't want to be charged for things that are working properly. I travel alone a lot and want the safety of my vehicle.

Asked by for the 2006 Ford Explorer