I can't imagine that it would do a whole lot to the attendance. I'm sure that they're proabably only taping a week's worth of shows (1 or 2 taped shows a day). Plus, since it's a taping, the people that are in the taping will be in the soundstage for a long time. You shouldn't have anything to worry about. Just be aware that "Who Wants to Be a Millionaire Play It!" will proabably be closed for the week that the show is being taped there.
By the way, in response to the second post, this is the version hosted by Meredith Vierra and syndicated on stations nation wide. Personally, I think Meredith does just as good a job as Reege.
RyMickey