Complete Dictionary of Dreams

by Dr. Mıchael Lennox
The lobby of any structure is the ante-chamber that precedes your entrance into the main room of that building. In this way, it has some symbolic meaning that indicates a need to prepare for what is about to come. Consider the type of lobby to round out your interpretation, as a theater lobby is not the same as one connected to an office building. No matter what associations you make with the building, any dream that takes place in a lobby indicates that there is another step to potentially take before you can benefit from the consciousness that the building has to offer.

New American Dream Dictionary

by Joan Seaman - Tom Philbin
1. Revelation to come, usually by the dreamer.

2. Potential for betrayal or treachery by friends.

Dream Symbols and Analysis

by DreamForth
To dream that you are in a lobby represents your plans to advertise or to make something public.