The trailer from the movie was made in Alma, Michigan. One woman, who made the curtains for the movie, received a piece of the set - the round table that folds. It is still in the family as an heirloom.
After filming, Lucille Ball and Desi Arnaz kept the trailer used in the movie at their home. In an interview, daughter Lucie Arnaz recalls using it as the children's playhouse and how much fun they had opening and closing the door to hear the chimes.
The trailer, a 1953 New Moon, used in the film is 32 feet in length and weighed more than 3 tons total.
The New Moon trailers, produced by The Redman Trailer Co. (as per original sales brochures & in viewing the actual 1953 models), didn't come with a sunken living room as was highlighted in the film. This was done to add a reason for Desi Arnaz's character to take his pratfall when first entering the trailer. You can see that the floor of the kitchen is flat with the living room floor if you look closely when he opens the door for the first time at the trailer show, as this was simply a regular production coach in the shot. The interior shots had a dropped section in the living room area and you can see that the vent windows are much further from the ceiling than they would be as seen from the exterior. New Moon trailers also had a furnace in the corner between the front door and the kitchen cabinet. It is assumed this was removed from the interior mock up for aesthetic reasons.
This was the first film of a multi-picture deal Lucille Ball and Desi Arnaz signed with M-G-M when Te quiero, Lucy (1951) was America's #1 rated TV show. When their second vehicle Forever, Darling (1956) turned out to be a box office and critical disaster, the rest of the contract remained unfulfilled.