They were not developed by Jung but added later by the personality researchers Elizabeth Myers and Katherine Briggs. The preferences are labeled as Judging or Perceiving and represent a general orientation to daily life. Judgers like a planned and organized life. Vacations and trips are well thought out. Their offices are neat and structured.
Relationships have their time and place.
If it is not planned don't do it. Perceivers like a spontaneous and flexible life. They do not like the restrictions of a schedule. They like things to be open-ended. A vacation with only a general plan and no reservations is fine with them.