Yes, Kristen performed but with a "Neck Brace" on when I saw the show Saturday. She's wonderful! It's hard to imagine Wicked without her as Glinda.
Regarding the ticket booth in Union Square. It's called TIX BAY AREA and they sell both Half Price day of performance tickets And Full Priced advanced sale tickets. Their web site is www.theatrebayarea.org
My perfect day would begin at on the beach in Hana, Maui and end at a Broadway Musical.
You're a veritable fountain of information, Rex! You get a NUTRO biscuit for that little tidbit. I didn't know that ticket booth existed, and I've lived here for 5 years. I think I've been subsidizing Ticketmaster. :)