Best of luck with your event! Sounds like it should be a great opportunity for South African blockchain-enthusiasts! We are thinking of organizing a similar Steem-centric Meetup in the Los Angeles area.
Also, for those that are interested in seeing more sports-related content on Steem, you may want to check out my team's recent announcement regarding our product, SportSteem. If you would like updates regarding where we are with development, you can join our mailing list at http://sportsteem.com, and follow us @sportsteem.