Absolutely not. I’ve never had Champagne de Castelnau anywhere other than a BA flight (thankfully) and I like to take time to enjoy what I drink when I’ve chosen it. But it has occasionally been an enjoyable challenge during a short outward bound flight. Although in hindsight, cocktail parties on cruise ships is another occasion I take up the challenge - again, limited amount of time but no charge per flute as already included in the cost of the original fare...