Well I just got back from my 30,000 mile service. Apparently the 30,000 mile service only includes a computer diagnostic...that's it.
I was due up for an oil change in 2600 miles. When I come back for the oil change service, I'm told that will also include new spark plugs, rear differential fluid change, and cabin filter.
I did request new windshield wipers for my 30,000 mile service, and I got them. I don't even think it has been a year since my last free pair.