Chance a venue under construction?

In my search for the perfect venue I’ve had a hard time finding one that I loved, until last week. Recently I came across a golf course that just announced a new venue it is going to build on its property, and the renderings of it look gorgeous and I love it (and the property itself is beautiful). The issue is that I’m worried about construction not being completed by the date that I’d like to reserve. I met with the event director and she assured us that the construction will be done by May 2020 and that their first wedding will be in July 2020. The date I’d like is September 2020. We asked about a Plan B if it isn’t done, and she said she is 1000% sure it will be (without really giving a concrete plan B). They have a clubhouse that they currently have weddings at but it holds 150 people and my wedding would be about 250. Has anyone had a similar scenario and how did it go?