For a truly unique and magical first dance consider
Dancing in the Clouds!
The "fog" is produced using "dry ice".
The is no "fog juice" to leave a residue on surfaces.
Dry ice does not "melt" the way regular ice does,
so it doesn't leave a liquid mess to clean up or make your dance floor slippery or dangerous.
Dry ice produces a low lying fog that covers the dance floor,
not rising to the ceilings or fire alarms, it then dissipates.
You will feel like you are truly dancing on cloud nine!