How short a time can you place on the Tournament starting? Would it be possible to set it so low that only nobles within Luria would have the time to travel to the grounds to partake?
3 days I *think*, which, considering Dwi travel times, is *very* restrictive.
Others might be able to make it, but if the admission fee is 100 gold and there is no reward, would they? If they do, free gold for yourself.