The pool rooms in my area hardly cover seating for the players during tournaments. If I was a paying customer, I'd expect seating at least. Also, tournaments are too long(and they usually end at very late or early hours of the day) for most people except for the most die hard pool spectators. Foods usually limited at these tournaments also. Pool rooms discourage or ban outside food and drink for the most part.
Pool rooms are going to have to meet certain requirements in order to attract a pro tour stop.