The day will kick off with the opportunity to watch the second test between the British and Irish Lions and the Qantas Wallabies on a big screen at 11am.
There will be plenty to eat and drink in the form of a hog roast, real ales and cider.
U9s and U13s touch rugby competitions will also be taking place and there will be the chance to tour Gloucester Rugby's training facility.
However, the big game of the day, which should kick off at around 2pm, will be the keenly anticipated showdown between the Gloucester and Bristol Legends.
It is hoped that the likes of Simon Amor, Andy Deacon, Thinus Delport, Adam Eustace, Terry Fanolua, Junior Paramore, Rob Thirlby and Trevor Woodman will feature for Gloucester.
The Bristol team is set to feature Ben Breeze, Darren Crompton, Paul Johnstone Gareth Llewellyn, Luke Nabaro, David Rees, Matt Salter, Craig Short and Sean Marsden amongst others.
And bravely volunteering to take the field for both teams are the likes of Jack Adams and Jonny Goodridge.
The event will raise funds for Pied Piper and Restart (The Rugby Players' Association) with a suggested entry donation of £5.
Brown is looking forward to the day's activities and paid tribute to those who have worked so hard behind the scenes on his behalf over the past 12 months.
"I wanted to finish the year with a bit of a laugh, and a bit of fun.
"It will be great to remember all the good times I've had over the years with Bristol and Gloucester.
"I can't believe how quickly the year has gone, what with everything that's happened with the injury and everything, it's motored by. It's a year ago almost that we had the testimonial match against Cardiff.
"A lot has been crammed in, the committee have done a great job organising all the events, and I just want to say thank you to everyone who has helped and supported me.
"And it's also another chance to say thanks to everyone who has helped me feel such a part of Gloucester."