It's been 2 years since we did a IAD-VIE RT in paid business and we still talk about the food. It was a A-340 going over and a B777 on the return. We don't remember a problem with seat comfort. We were surprised that the meal service started so quickly after take-off -- no usual "cocktail" time but those were available on request as staff was preparing to serve first course -- FAs had to go back to galley for the hard liquor. Vienna Airport really is dated, and the gate area on the return was way over-crowded.