I've been watching from the FB groups in the area that are tracking the progress. Construction has stopped. They put out erosion control and the contractor staging area a few months ago, then the contractor pulled off. Original rumor was that the concrete batch plant would show up in March and then construction would get more underway - that hasn't happened. The latest news updates include a blurb saying that costs have increased and they are currently working with the state to get funding...
I know there's a lot of utility/civil engineering that has to take place off-site just to support the ability of the site itself to be developed, but that is why these projects often have a 5-10 year timeframe instead of 2-3. They have made it through a few hoops regarding zoning and some infrastructure approvals, but there's still at least a year's worth of effort before they get to where they can actually move much dirt. Theoretically they could build PART of the RV park, but it would be pretty underwhelming.
We'll see where they finally land, but I'm guessing they end up with a small RV park, a small lake resort, and MAYBE a small theme park.