My wife is a whiz on Wheel. She came close to being on it.
I was on it. Be enthusiastic and personable. Find something unique about yourself and tell it in a unique way.
If she doesn’t have anything unique find something and try out again.
And yes, it is harder on set under the lights than it is at home. But then again, I was never a whiz at it.
They had a couples game and a guy I know was on it. While he and his wife didn't win, they did walk away with $15K........