Advice Needed For 10 Day Ticket Sales Challenge

I am an avid reader and follower of all the threads on WF. I find it one of THE most helpful and informative sites for marketing ingeneral.
Which brings me to my "advice required" thread. We could do with a little bit of online and offline assistance.

Many of the UK based subscribers will know about the hit tv show Strictly Come Dancing, the mother show of the US prog Dancing With The Stars.
The show has around 12 Million viewers.
Well, I have booked two of the dancers from the programme for two shows in the North West of England.

The first show sold out in a matter of weeks, hence why we added another show. However that second show is proving to be a bit of a nemesis at this stage.

We've sold about half the tickets available but with ten days to go, and a radio and local press campaign going, ticket sales are sluggish.

I'd be eternally thankful for any Warrior's sugggestions as to how to give the thing one last great push.
To put it on blunt terms, we need to sell around 120 tickets in ten days!

Any help gratefully received

For info, you can have a peep at the show website, Strictly Southport Jazz with Vicent & Flavia. Prince of Wales Hotel, Southport.