In 2015, I was staying at AKL with friends and they overslept, making us late for our ‘Ohana breakfast ADR. I called Disney Dining to see if I could get the no show fee waived as we were a large group and the reservation was on my account, and they said as long as we arrived within 20 minutes of our ADR the fee would not be charged and we would be seated. We got there at 20 minutes on the dot! Of course, the policy may have changed since then.