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.
Collective learning can refer to different concepts: It is sometimes used as a global term for everything that is cooperative, collaborative, etc.