Guests can enjoy cocktails in a contemporary dome structure with Parisian-inspired décor celebrating the brand's French heritage.
On selected nights the bar will host performers such as Hula Hoop artistes, liquid dancers and bubble-blowing expert Samsam Bubbleman.
Grand Marnier signature cocktails will be served in bubble-shaped branded glasses.
Sharon Richey, chief executive of Because, said: "The Bubble Bar experience invites guests to see Grand Marnier differently. We want people to associate Grand Marnier with the excitement of the early evening and the effortless sophistication of a Parisian bar at sunset, without detracting from the brand’s strong heritage."
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