Stingrays in the snorkelling lagoon at Castaway Cay? Who else has seen them?

Gearing up for trip #2 to Castaway and hubby is interested in the Stingray Adventure.

However, last time, when I snorkelled in the snorkelling lagoon, I found a ray in the more shallow, seaweed-y area of the snorkelling lagoon, over closer to the Heads Up bar. It was definitely staying away from the busy area where the underwater statues, etc, were, just chilling with a fish friend.

I'm wondering if this is pretty common, or an anomaly? If it's pretty common, we may just go with the Castaway Cay Getaway Package (bike, snorkel, and float), but if this was not something that is common, then we will do the Extreme Getaway Package that includes the above plus the stingray adventure.

I searched the sub for this but didn't really see it mentioned.

Thanks!