Glad to help, but I did forget one thing.
Since you have a young child you might like to know that there are restrooms on all the excursions, however when you go shopping the bathrooms are far and few between. The main building you have to go through as you leave the port had public restrooms. However after that it's not so easy to find. We only saw a couple of public restrooms on the island and they charge you to use them or at least a mandatory tip. Also the bathrooms on excursions are pretty clean, however the public ones near the shopping are not as clean as you'd like them to be. The only free ones were at the port as you were leaving, the casinos, and on Ferry Boats going to excursions.
We never saw any public water fountains either. There may be one in the main building as you leave the port, but we just took a bottle of water with us. Most places on the island sell bottled water, but it's very expensive.
We did ask about this and were told that fresh water is a rare item on any tropical island so you must pay to use anything that has to do with using water. This was true on St.Maatin, St. Thomas and St. John's islands too.
Just thought you might like to know this ahead of time too.
If your son really likes the Fish, Atlantis is 10x better than the glass bottom boat since you can take him back through at his leisure. Just keep your wrist bands on as proof you paid for the tour.
mom x4,grandma x4