there’s plenty of great rp events all the time on this server, but if you specifically mean "DUELING PVP EVENT"s I remember a very successful and fun tournament set up by the steelpaw shaodin a few months back!!
Lotta people got to show off their pvp ability and make friends both IC and OOC! I’d wholeheartedly recommend you take a look at their rules template and prize pool for inspiration for next time you start a tournament (for example, the ilvl rule might be a problem considering some classes rely more on gear than others)!