The scene where Ed, Delinda, and Ed's mother are leaving the opera was shot at the LA Center Studios. The building in the scene is the same one that serves as the LA FBI office in Numb3rs and Philadelphia police HQ in Cold Case.
When Sam hugs the King and Queen of Coupons, at first the couple is on each side of Sam. In the next shot, the Queen has moved over to Sam's right shoulder that her husband hugged
When the money starts blowing around in the room, there are several people in the room. Why is everyone so stupid that they don't think to merely shut the window? In addition, if it were very windy outside, the wind would most likely blow into the room, not out of it.
Furthermore, in several episodes, it's implied that the Montecito has sealed windows that are not able to be opened.