Originally Posted by number_6
The FL serves champagne at LHR (Heidsieck, same as at the other FLs). But it is "on request" and kept out of site (while the other FLs have it on display in an ice bucket). Those in the know can order it, while others are left thirsting for more. Quintessentially LHR.
Thanks for sharing this piece of intelligence! FYI, LAX has replaced Heidsieck with Moet but I don't think this swtich would be extended to other FLs.