SATURDAY NIGHT'S Showdown XLI is officially sold out, with a Port Adelaide three-game membership now the only way for footy fans to see the game.

The final ticket allocation for the game was exhausted following a noon release on Wednesday.

Port Adelaide's three-game membership costs $100 and is available for purchase online or via the club's membership hotline on 1300 467 232.

Adults wishing to see the game on a youth or concession ticket will be able to upgrade at the gate for $35 plus vendor fees.

Port Adelaide's membership department released this information on Tuesday, additional to the following details regarding stadium access for Saturday's game:

General Admission membership includes access to Showdown XLI even in the event that the game sells out.

General admission areas will be reduced; Bays 141 to 143 will be reserved seating for this game only

Memberships are transferrable – if you can’t make it then pass your ticket onto a friend (Reserved Seat and Essential Members can also ticket transfer online)

However, Junior and Concession tickets require appropriate ID to be presented upon entry – if this cannot be presented patrons will be directed to the box office to upgrade. If an adult is using a junior or concession ticket it can be upgraded on the day at the box office by paying the minimum entry price for that stand – Reserved Seats can be upgraded for $35 plus ticketing fees (equivalent to the cost of a general admission ticket) and Western Stand tickets can be upgraded for $55 plus ticketing fees (equivalent to the cost of a guest pass).

Port Adelaide plays the Adelaide Crows in Showdown XLI on Saturday 20 August at 7.10pm at the Adelaide Oval.

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