Portable displays like this are what you want when all you are given by the event organizers is a table. Even if you have a full size display, it won’t fit in that space. These are designed to show well on a table, and fold up to go into your trunk or back seat very easily.
Depending on what you are given, a banner stand is also an option for a portable display. They don’t go well on a table top, though! A table top display is the right thing for a table top venue.