Hi -
I am just back from the Residence Inn right next door and took the Horizons tour. The water playground and pirate ship pool is done and looks great. They are working on the next building and construction is going on all day. Other parts of the grounds looked fine as I rode around in the golf cart - but you will definitely see that new building going up. Sorry I can't be of more help - I do think that Marriott has a great deal w/ their current Horizons timeshare purchase and would look into it if you haven't already. The purchase incentives alone are great!
Enjoy!