If you are taking about next week's show I bought tickets for Wednesday about ten days ago and the only day sold out then was the Saturday.
However it riled to be changed extra by the ticketing comany for the privilege of buying tickets on line!
They are limiting them again like February to 22000 a day or something like that. It keeps the show feeling like a Saturday all the time!
What used to happen with the tickets would be 100,000 turn up on Saturday and 2000 would be there on the Tuesday, they are trying to keep it consistent everyday!