There's no chance that they'd've been drinking Corona; if there's one thing that spies are known for it's a discerning taste in alcoholic beverages.

Oh you ain't heard of the Pabst Blue Ribbon alliance?

Actually there are some variations of corona which are quite ok. But I don't know if they are sold EU/Worldwide.

So it they had meet in Barcelona they might have ended up with that name (or more likely a tapas name ;)