Nice! Ya'll are gonna have a great experience with the little dude. Def the only concern I had when I read your post was the horses so just keep an eye out for that.

Country Country would be a great property for a home base con bambino, but there are plenty of other places on the beach that would be super fun and kid friendly...

Margaritaville, throw some water wings on him and let him jump on the trampolines with you. Just don't stay for a meal+drinks lol.

Sunbeach would be a great place for lunch. Good food, Huge beach, and the bar has swings made out of lawn chairs. My kids like chilling out there after playing on the beach. At the time the property next door was clothing optional, made for some pretty stellar reactions from my then 6 & 8 year olds jajaja .

There's a water park in Negril, Cool Runnings, but I've never been and have no idea if there is anything there that caters to toddlers...might be worth looking into

I'm sure more people will chime in with suggestions. Oh and that map that was posted earlier in the thread is a MUST HAVE. Print it out, laminate it, use it.

FULLJOY your trip, you're gonna be addicted just like the rest of us lol