My guess is that the Ace Ticket sales reps on the phone get a commission, and that Ace Ticket purposely doesn't include the seat numbers online so that you have an incentive to wait until they're open and call the sales rep on the phone.
What is 'Collective Bargaining'. Collective bargaining is the process of negotiating the terms of employment between an employer and a group of workers.
There are currently 12 unions representing approximately 157,000 state employees in 21 bargaining units (see chart). Each unit separately negotiates contracts called memoranda of understanding (MOU) with the Department of Personnel Administration (DPA)--the Governor's collective bargaining representative.