Based on surveys and tournament experience, it's better to have the game last for 2 weeks.

Experience shows that there's no difference between 1 and 2 weeks; those who want to play will manage, while others won't even have enough time in a month. There could be at least two reasons for this: 1. lack of free time, 2. lack of initiative. In both cases, it would be the optimal solution to simply skip it and not bother either themselves, the organizers, or the participants. You'll have a chance to compete in the next tournament.
In general, as practice shows, if there's a desire, even an "unreachable" LeBron can be pulled out of a parallel reality and play the necessary games. But if there's no desire, then debts accumulate for months. This is especially evident in the pairs of our masters.

In short, I'm in favor of 1 game per week.

The rules are: single-elimination match. One game.

I agree.