Hey ShellKing, we'll be there on the same dates, we're bringing our 2.5 year old, and 1.5 month old.
If you haven't read yet, there's a bit of a friendly crawl happening on April 1st. See the thread in this section of the forum about it.
I'm diving as well, although my wife won't be able to since our youngest still needs to be fed both often and regularly.
What time are you getting into Belize City?