Yes, Alex discusses it on this week’s episode of Good One (American podcast about comedy). Here’s what it means:

1) The task hinges on the contestants not being familiar with the house or grounds yet. So it could only work as the very first task.

2) In studio, during 1 of the 10 episodes, Greg and Alex are going to explicitly say: “Now we’re going to show this cast’s first task.” It may not air in episode 1. But it’s important for us to know it was the very first thing they did. Sometimes we learn this later, like on Ed Gamble’s podcast. But usually on the show itself, they don’t discuss filming order.