You'll be lucky if they even bother to look at it. As long as the box is checked, your OK. During my 2 year free service, I always check their work. At last look under the hood to make sure the oil cap was in place, before driving off. Don't laugh, it actually happened to a couple of friends of mine.....
How do you check they actually changed the oil filter and replaced with the correct oil? After my first free inspection for my 2017 Prius where they falsely wrote they set tire pressures too low when they did not change them, I do my own oil changes so I know they are done properly.
you mark the filter n put different color/type of tire stem caps. you can also mark your tires too, some white-out in-between the tire threads. As far as the oil; the worse they can do is put 0w20 in it. They're suppose to put 0w16 in mine; but who knows. I got the check mark in the box, so it's all good!!!
Yep, while the Toyota Dealerships do use Toyota OEM filters, the oil is just the cheapest bulk stuff, in barrels, just like Jiffy Lube and Walmart Automotive. Charge premium prices but provide mediocre service for maximum profit! But, at least, it's synthetic oil. (0W-20)