Here's something to ponder. I have a premium maintenance plan and extended warranty on my other vehicle (not Mazda). I was never a fan of these plans, but it was attached to my truck when I bought it, so didn't cost me anything. This plan is for 6 years / xxx mileage and very clearly states an 8000 km service interval. I stopped at the dealer one day for a simple bulb issue. Mechanic quickly came out and was a 5 minute fix. They didn't charge me, but advised me that stops like that should go against my total visit count. That would mean I would run out of visits before the allotted mileage. From then on, I just scheduled at the 8000 km intervals. At least they advised me instead of letting me use them up.
Not 100% sure, but I will assume Mazda is the same. The service visit is not just inspect. If you read farther, they follow the maintenance plan that you selected. Everyone has these maintenance schedule in their manual. In my case if the manual says change this, it is changed regardless of condition. Over the last few years that includes oil changes, wiper blades, diff/transfer case lube changes, transmission flush, spark plugs, belts, filters and right now they are changing out all the struts, shocks and brakes. (I'm sure most people don't change out these items cause the manual says to). I haven't spent a penny on maintenance except a set of tires. No idea what all this would have cost, but oil changes alone are $1300.
I sort of miss working on this vehicle, but it's also nice to drop it off and let them do what they do. And yes, it's honored at any OEM dealer.
There's a lot of folks out there these days that know nothing about a car except how to start it. Depending on the cost, type of plan and how long you expect to keep the car, it's really not a bad idea. Anyways, just another side of the story.