A concession offered to Aboriginal and Torres Strait Islander Tennis fans has come under fire with suggestions the discount promotes a negative assumption.

Indigenous culture became the focal point at Melbourne Park on Wednesday as the Australian Open celebrated its now annual First Nations Day, garnering widespread support from a range of voices.

The Grand Slam was awash with a range of showcase events and initiatives including a Welcome to Country at the front gates, traditional food stalls, dance, art, walking tours and young mob taking the courts as squad of Indigenous ballkids and casual participants.

With it came a $10 discount offered to First Nations Australians coming through the gates, drawing criticism from a prominent Aboriginal voice.

Former Indigenous Advisory Council chair Warren Mundine was critical of the discount.

Mr Mundine slapped the gesture with the claim it projects the notion First Nations people are "poor".

"I just find this stuff patronising," he told Sky News.

"I've been to the Australian Open a number of times and I've met Aboriginal people who go to the Australian Open and watch the tennis, and guess what? They actually paid for their own tickets and have been paying for them over a number of years, because they've got this secret business stuff which is actually working and running your own business and making money so you can buy these tickets to do things."

Speaking on 3AW radio earlier in the week, Tennis Australia chief executive Craig Tiley said the 'Mob Pricing' is aimed at "providing an opportunity for every Australian" to come along.

"This is just part of our ongoing initiatives in making it (the Australian Open) accessible."

Mr Tiley conceded the parameters set for ensuring only First Nations Australians are purchasing the tickets is a difficult process.

"It's a hard question to answer because there's not going to be a vetting process," he said.