Traditionally, in a festival environment the concessionaire rents generic pop up tables to use as bars. This is efficient but unattractive and unstable. Usually, they will wrap the tables in plastic to try hide the tables, adding another expense on top.
These pop up bars are durable and sturdy. They hide unattractive attributes of the bar behind a solid wall. The lower surface where the cash drawer rests lifts so that you can hide unsightly cables from point of sale units.