I was at Vidanta earlier this week (Jan 2019) and went up to 9th floor of Grand Bliss, overlooking the new park and received an update on construction.

1st of all, I told Vidanta staff they were awful at communication and park goers who are interested in visiting are making up their own messaging about the park. It appears to me as if funding is constrained (I had heard some interesting rumors about original park ownership & funding having come from certain, ah....questionable sources, not rumors I chose to inquire about, but construction is indeed proceeding

1st: the original park architect and Vidanta have (supposedly amicably) parted ways. A new architect has been hired and the park is progressing from what I saw. Both Phase 1, hotels, cirque acrobatics and rides and Phase 2, water park, are under construction. There are 4+ construction canes erecting hotels (typical Puerto Vallarta concrete/block construction) and access roads and various hydrologic and civil construction projects are under way.

2nd: Phase 1 construction is scheduled for completion Nov 2020; not sure of Phase 2 and beyond.

3rd: there will be two levels of park accommodations: a normal hotel style in studio, 1 and 3 bedrooms (with convertible coaches, which, if Sea Garden is any indication are quite comfortable) and an exclusive, ultra expensive, luxury style (I have rights for 10 weeks in 1BR normal style along with guaranteed park admission every day through that week), which I plan to rent on open market, once park opens

4th: there will be a train from the center of the Vidanta property, Santuario (the central cocktail lounge/showroom) as well as a gondola from the Grand Luxe.

5th: attendance each day will be capped at 6,000 people

6th: overall park size is planned for 240 acres (I think the original plan was 26). If you know the Vedanta property, there is more than enough room (and water) to support the planned size. Also, the water park plans include a "lazy river".

These are all plans as of today...so of course, anything can change.