Barbara Eden's cries for help from inside the champagne bottle were real. As a prank, director Claudio Guzmán called "Lunch!" and had everyone leave the set, leaving Eden trapped in the bottle. While everyone waited in a nearby hallway, the cameras kept rolling, and the resulting footage was shown on TV.
The restaurant where Tony and Roger are drinking coffee was actually Tony's upstairs study converted into a restaurant with tables and chairs. If you look closely, you can see the same brown banister post Tony has in his study.
The title was based upon the film How to Marry a Millionaire (1953). Barbara Eden starred as Loco Jones in the television adaptation How to Marry a Millionaire (1957).
Jeannie II has been married 47 times.