The ornamental design for the beverage floor display stand, as shown and described.
FIG. 1 is a side perspective view of a floor display stand having an outline in the shape of a bottle;
FIG. 2 is a side elevational view of the floor display stand, showing the spiral shaped wire portion on which bottles are hung, displayed, and dispensed;
FIG. 3 is another side elevation view thereof taken on a different plane; and,
FIG. 4 is a view taken from the top of the stand looking downward at it.
The broken line showing of bottles and a stand base are for illustrative purposes only and form no part of the claimed design.