There's a whole article on events at Tribunal in Sub Rosa #5, the article is "Tribunals at Play." With review here
It talks about beforehand, during, and afterwards. I actually put it to use again, back in November for a Theban gathering.
And Sub Rosa #12 has an adventure meant for the grogs at Tribunal, behind the scenes. Written by CJ Romer, it's Love's Labours Lost.
-Ben.