Fun dream meaning is explained below using 5 different sources. Each interpretation is shown with its source.

Interpretation 1 — Zolar

lucky numbers: 18-28-30-33-41-47

expense of others, at the: losses.

friends: change for the better.

having lots of: rapid success of own hopes.

important people: honor and happiness.

others having: money wil come easily during life.

relatives: happiness in various matters.

with children, having: doomed for disappointment.

Source: Zolar’s Book of Dreams Numbers and Lucky Days Author: Zolar

Interpretation 2 — Dream Explanations - Anonymous

Dreams of having fun and frivolity are about a desire to connect with your spirit and to take yourself lightly. Perhaps this dream illustrates a desire to return to youth. Keep in mind that fun is rarely about circumstances and always about your state of mind, and it is ever available.
Source: Strangest Dream Explanations Author: Dream Explanations - Anonymous

Interpretation 3 — Internet Archive - Anonymous

Excessive merriment is a bad sign in a dream, and foretells difficulties in business affairs.

The more boisterous your amusement, the more serious matters will be. Quite homely happiness is a different matter.

Source: Mystic Dream Book Author: Internet Archive - Anonymous

Interpretation 4 — Stearn Robinson - Tom Corbett

Good-natured clean fun is a forecast of general good times ahead, but boisterous hilarity or fun at someone else’s expense is a forerunner of business difficulties.
Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 5 — Ibn Seerin

(See Jesting)
Source: Islamic Dream Interpretation Author: Ibn Seerin