All of these are great questions -- and at last check the team and the broadcast groups are asking the same questions. We are all asking the same questions, in many markets around the country, and teams are doing that too. They don't know the details yet. They don't know if it's something you'll be able to turn off (it likely won't, lots of money is at stake), or if there will be a gambling feed and a game feed, or if it will be just ads around the border and numbers to text in with bets. Or if there will be reads and graphics and details at the ballpark like there is already for Fan Duel, etc.
Consider for a moment that Fox Sports Midwest straddles two states here on opposite sides of the Mississippi with different laws. Don't know how that's going to look, either. Not at the moment.
Who gets the money from what? The money from the rights fees will go to MLB clubs. That's why they're doing this. The revenue from the broadcasts will be shared like they currently are by the groups that own the outlets, and the Cardinals have an ownership stake. The revenue from the bets? The company that paid handsomely to have the access to the broadcasts.
And in the coming year, as a CBA is negotiated, players are going to want to assure they see something from this revenue, too.