No worries, because there's nothing political or "environmental" about the situation. Just as you said, and as I said in my last post, the summer months produce a huge need for energy, and the grid can only handle so much.
Or, an animal could have also gotten into a transformer or substation and shorted out a phase. Raccoons do that here quite often.
Or a car could have hit a power pole, causing a distribution route to go down, which requires a substation to have switches thrown (manually or automatically) to re-route power. That takes time.
Any number of things can cause a power outage like this. And unless they have instantaneous battery UPS systems in place at every single attraction, with generators to back them up, it will always trigger a chain reaction.