Well, by some miracle I managed to actually get in...by an even bigger miracle I was sat rinkside
The first thing I would say is how much smaller it is in the studio than it appears on the TV. The audience seating area is actually really small, just two banks of seats either side of Philip and Christine's stage.
The other side of the rink has no audience at all, the whole of that side is taken up by technicians, cameras, directors etc. When the skaters present themselves before starting their routine, they actually have their backs to the audience as they face the cameras.
The whole area is really compact with only some cloth separating the way into the seating to the back of the ice rink where the skaters come in. One of the skaters went the wrong way and had to be sent back. I didn't see who it was though - just the back of her as she went back the way she had come.
The spotlight operaters are based in each corner of the rink and have to climb up a rope ladder to get to a cradle hung from the rafters.
The standard of the skating seems much higher and much more even watching it live. You can appreciate the speed across the ice much more and it all seems to be over so quickly that it is impressive that the judges have time to come up with things to say, although I am sure most of Jason's stuff is prescripted. That 'bored to Beth' comment

went down very badly with the studio audience.
We went into the studio around 4.30 and for about an hour before the show goes out on TV there are some bits that get pre-recorded like Jane Torvill being hoisted up in the gold dress and jumping into the arms of the pro skaters. This was actually done in 2 sections and pieced together.
We don't get the ad breaks in the studio. During the time the ads are on the next celeb is warming up on the ice so we get to see that instead.
I was also surprised to find that the bit where Phillip says "these 6 celebs earlier skated for your vote" is pre recorded at the end of the first segment of the show. It isn't done live at the start of the skate off part of the programme.
Overall I very much enjoyed the experience, even if it was a very cold day and I had quite a long wait.
I'm sure there are lots of other things I could say so if anyone has any questions, please ask