I just did a normal oil change at 15k with the normal inspection.
I replace my air filter every 10k miles (normal schedule is 30k), and lube my driveline every 10k miles (normal schedule 15k).
So apart fromt the normal oil change and inspection, they should only lube the driveline, inspect fluids in driveline (diffs, etc) and rotate tires.
I did change my diff, transfer case and tranny fluids at 20k. Toy ATF type IV for the tranny and M1 gear oil for the rest.