I will just say I always take 💩 coins when asked to for payment.  Give me an address 

Me - Goes to exchange, generates 💩 coin address, sends to 💩 coiner.  

Deposit comes and turns into BTC, I do often require a 5% inconvenience fee to accept their shit coin though, to cover fees. 

To me this is great it causes a buy on BTC and a sell on the 💩 coin of choice.  

 5% inconvenience fee is the way… and if you go, your entire presentation should be entirely about exposing the organizers lack of bitcoin with the goal of max embarrassment.