Unfortunately no. I was on the phone to both TM and the Olympia this morning. I think had I bought the tickets directly from the venue I would have some chance alright but TM won't swap them under any circumstances.
I asked how many seats were still unsold and was told 80-90. So if all else fails and there are still a large number empty on Monday morning I might chance buying a ticket with hopes of sitting in empty seats once in! Not sure though as the box office staff said the promoter might give empty seats to friends! Hard to know what to do but all I know is I have one very disappointed little boy on my hands! (Then again going by recent reviews he might be more disappointed after seeing Richie!)