Changing this belt is not the most difficult thing I've ever done, but I wouldn't call it "cake." Changing this belt is actually a PITA compared to most other cars with serpentine belts.

You have to loosen the large center bolt on the front of thensioner and then loosen the tensioner with the long adjuster bolt/nut. You will most likely have to remove the fan which if you don't know how to do it, this in itself would fool a lot of service station guys.

This is not a 123 car with conventional belts. For many DIYers this would be a challenge.

Good luck,