Don't bother applying for tickets for the show...
Firstly it takes ages to actually get hold of any, and secondly, when you do manage to get tickets, you're not even guaranteed to get in. I had tickets for last night's show and we arrived an hour before the doors opened, thinking that perhaps we would get a better seat that way. We didn't even get to go in! As we were queuing, they were letting a stream of 'specially invited guests' in ahead of us (not sure who they had to sleep with to get that privilege, but anyway...), so by the time us 'normal' people started going in, there were only 50-100 seats left (maybe not even that many) and they turned a load of us away! Good job I only travelled 25 miles to see the show...
So unless you're a huge fan of Ant and Dec and are prepared to queue for 5 hours, my advice is: don't bother.
If I wanted to work with this many twats I'd have become a gynaecologist.