Talked with the Service Center about the service plan. Their big argument for the pricing is that an alignment costs $200 and it's slightly less than half the cost of the Annual Service with the plan (a 3rd without). They provided me a
copy of their checklist (she said they didn't like handing out blanks so she wrote Sample on it, hopefully I'm not getting her in trouble by posting this). Based on this checklist it's clear that this is more than just a change of wipers and key batteries.
She told me that the plan has the hard limits for mileage and time (within 1000 miles or 1 month of the limits). But that they have been more flexible than the required limits, particularly the mileage limits in cases where the yearly mileage was close to the mileage limits (she gave a 15,000 miles as a example for year where they'd ignore the 12,500 mile term). I got the clear impression that while they've been flexible on this that you shouldn't count on this as an ongoing policy.
She asked me if I had the resale guarantee when trying to explain why you should get the plan. I got the impression (though she didn't say so) that you should be doing the 12,500 miles service intervals if you want to preserve the resale guarantee. But since I don't have the resale guarantee we didn't get into that.
I asked about if the +4 would be available once the 4 year plan expired. But she couldn't answer that question, she said Ownership (who directed me to the Service Center to answer questions about the plan) should have answered this. Her understanding is the +4 isn't available at this time and that you shouldn't count on it becoming available.
Hopefully people find this helpful. I'm still undecided but I've got a while longer to decide.