We saw the penguins come in at dusk at Phillips Island, the nature center there, in March 2015. It was amazing. You could not use a flash on your camera, although there were a few who did it anyway. So have a camera that works well in low light without flash. I didn't do any then, but now i have a Nikon D750 and it does low light well. Wish I could go back.
We were on a Road Scholar trip so no timeshare.