I was there, and it was beyond fabulous. The first thing that struck me was how enormous the set is - it seems to extend a lot further around the sides than the one in the Gershwin. I've seen Wicked over a dozen times over the past four years, but when I walked into the Regent last night I was *stunned*. Also, during the show I noticed a LOT of lighting effects and detail to the scenery that I had never noticed before. I can't figure out if they really went all out, or if I just...never noticed all that before. (Am I really that vague? I've sat front row at the Gershwin and never noticed that much detail!)
In place of the Priscilla mirror-balls are quaint little lamps.
The cast are among the best I have ever seen. For me, Amanda Harrison (Elphaba), Lucy Durack (Glinda) and Maggie Kirkpatrick (Morrible) trump all others I've seen in those roles. ESPECIALLY Lucy - girl was born to play Glinda! She is a constant joy to watch, and it's so apparent that she is having a ball herself!
Rob Mills (Fiyero) I found a little wooden, but I really think he's going to be awesome - come on, it was first preview, I'm not going to pass judgement that hastily. His and Amanda's voiced blended SO gorgeously as well...although she did drown him out a little, hehe.
Penny McNamee is a phenomenal act 2 Nessarose - very bitter and angry and a little bratty. I didn't notice her much in act 1 - sweet, but she didn't come to the fore until Wicked Witch of the East. And then, *whoa*.
No major screw-ups, either. Bubbles worked, gravity was defied, one or two minor line flubs but pfft, that can happen any time.
Oh and the monkeys fly out over the 7th row of the stalls - I was seated there and they were right above my head!