The main takeaway is how fast your air is consumed. Ideally they would have you record pressure readings at, say, 1 minute apart at 30 ft, and repeat this at 100 ft. You should have to check out a colored card to see the color difference at depth. You may also have to solve some problem at 100 ft to try to illustrate narcosis, but it's an open question whether it will be noticeable at that depth for you. (For example, after being shown a number, you show that number subtracted from 10; repeat a few times.)the instructor is taking us to 100 ft to see if we experience nitrogen narcosis
As others have said, PADI AOW is supposed to "advance" your knowledge and do some fun dives with an instructor that are likely a bit different than your typical dives. Your class sounds about normal to me.