Originally Posted by Metanoia

Like [MENTION=794047]skywardhunter[/MENTION] said, if you arrive at a "real gate" in B or very close C you might be able to get a glass in. When short on time I usually head to the champagne bar (into the gates, stay to the right, go all the way to end and make a right), get a glass, and drink it on the way out since it's a good 5 minute walk each direction, and drop off the glass at the exit.