I was originally going to say that the general public won’t know good diving from bad, but then I read the post above yours. I would say that John’s grandchildren are probably more knowledgeable than most aquarium visitors.
I’ve done a bit over 50 dives at an aquarium. Most of the time I was doing a job (cleaning, etc.), but on a few I was talent during a show, often in costume, but sometimes not. They most likely won’t recognize you. I saw a few guests at the aquarium later, and even talked to them. I had to let them know that I was the diver they interacted with through the glass as they had no idea.
This was a photo the aquarium used on their website to promote an event I was involved in. Halloween time, Ghostbuters themed. My buoyancy is not great as I was purposely a bit overweighted to interact with guests who are at ground level. My daughter is the other diver in the pic. Pretty sure this was the only dive where our SAC rates were identical. She had a lot of fun with the bubble gun in her hand.