If you show up at the counter, show your Airine ID and identify yourself as an Airline Pilot I'm sure we'll do our best to let you ride the jumpseat. Depends of course on who else has asked, but if it's available it should be no problem.
We generally allow other Airline Pilots with ID to ride the jumpseat. It's at the descretion of the Captain.
Good luck, hope to see you on board.