Reigning champions Posh are set to bring a little over 25,000 to Wembley, which has a full capacity of 90,000.
Blues, meanwhile, recently confirmed that their request to the EFL for 6,500 more tickets had been accepted and they will now be backed by more than 43,000.
There are designated areas and pubs for fans on both sides to visit before the 3pm kick off.
Peterborough have been allocated six different pubs ahead of the final, while Blues fans will have their pick of 12.
Box Park, on Olympic Way, will cost £11.52 to enter per person and you can use it from 11:30am. Under-16s go free with an adult ticket.
The London pubs allocated to visiting Blues fans before the Vertu Trophy final are:
Crystals (Sports Bar & Aq...