Timekeeper has not yet been open this summer. Hopefully they'll at least open it up for the holiday weekend.
They're pretty tough on videotaping in this one. The CMs in there often walk around the room during the show on patrol for cameras and aren't shy about asking you to turn it off.
I checked the official web site today and there is some hope. In the past, timekeeper has occasionally not been listed as an attraction. At least now it says "Open seasonally". I hope it's open when I go in three weeks