I reeeeeaaaallly want to go to Stratford Westfields before Christmas. I live 6 train stops or an hour on the bus (could drive but I'm worried about parking and I haven't driven in Stratford for 15+ years) Got nifty in car Sat Nav though.
But my next 3 weekends are busy.
DH is working up til the 23rd.
I'm taking them to Bluewater to go on the SnowSlide (and do last minute shopping 
) They are too old for Santas Grotto now.
I did go to Westfields on the weekend it opened but it was madly busy.
There's no shops there that I can't get at Bluewater or Lakeside.
I'd have to drag the DCs during the day in their holidays. And I'd probably buy nothing and get fed up with the crowds. (It took me 20 minutes to get across the food court last time) 
I'm doing a good job of talking myself out of it. I shouldn't go.