Congrats on the certification. I hope you enjoy the advanced openwater course as well. I wish I could go diving more often but the person who was suppose to become my dive buddy got married and had a kid instead and now can't afford to go diving.
I'm actually surprised that they let you feed the fish when you were done there for the open water dives. In our course we were taught that feeding the fish wasn't a good practice because it could upset balance of the ecosystem. The one thing that was stressed the most on our course was not to touch, feed or alter anything in any way.