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.
Rights of workers to negotiate the terms and conditions of employment through chose representatives. The bargaining agent is designated by a majority of the workers in a bargaining unit to represent the group in collective bargaining. Bargaining Unit:A group of workers who bargain collectively with the employer.