For those of you who don't know Champagne Guggenheim is a fictional champagne brand that exists in the Arrowverse. Referencing one of its main guys in charge, Marc Guggienheim. My theory today is based on the scene that takes place in between Seasons 4 & 5. Where Felicity and Oliver have "bunker sex" when drunk. Curtis provided the drinks, but we never see the bottle or brand. My theory is that they had some Champagne Guggenheim. What do you guys think? Could this theory be true? Am i overreacting and it is actually just a regular bottle of wine?