As someone that was there, I can say that I very much enjoyed my time at Dayton despite this. Unless you were one of the ones that had their equipment damaged by the sewerage, everyone just dealt with it. Yeah, it was a bit gross, but it kept most everyone that I ran into laughing, not angry. The bathrooms were not completely shut down, only those that were around the main arena.
This was my 5th Dayton, and I probably had more fun this time than at any in the past. I don't go to Dayton expecting it to be held in a 5 star convention center.