Flew Delta into Amsterdam on April 15 from the US. Landed about 6:40 AM, connecting to a flight to Malta (Schengen) so went through in-transit immigration.
The EES part was a breeze, lots of kiosks (40 or so?), scan your passport, take your picture (you have to take off your glasses), lay your hand on the scanner. We were not asked any additional questions. Do pay attention though, you will then either be directed to lane 1 or lane 2. The message pops up, then disappears. Lane 1 (my wife was directed there) is the e-gates, just scan your passport and look at the camera and out, no passport stamp or speaking to an officer. Lane 2 (where I was directed) was the manual line. which is what took time.
Still, we were through in about 30 minutes tops, maybe 20.