They seem to fall back on overly-optimistic with a little mistruth thrown in. I remember seeing them at a boat show not too long after Irma and they had me convinced they would be open in 2019. When I questioned how that was possible when it looked like nothing but bare ground, they told me they had all the buildings pre-assembled off site and it was just a matter of bringing them in. They also tried to sell me on the idea of having small villas available for purchase "in phase 2 coming soon".
A friend on island was told recently that come hell or high water they would be open before Christmas this year. I think I shouldn't hang my hat on that either.