Is Wix Arena Good?

Hello, I don’t know if I can post this here or not but figured this place has the most Wix Experts than any other.

So,
I am thinking of applying for the Wix arena, and I was wondering:

Is it any good in terms of gaining new clients?
How many clients on average can one expect from there in a year?
How much time did it take for you to get accepted?

Any kind and amount of information is highly appreciated. I’m really curious.

Thanks. : )