You can ask Ushermittwoch many questions...I guess I know what the answers will be...
Worst airline? Iberia.
Worst colors? red, orange and yellow because those are IB
Worst color for a seat? blue, because IB
´s seats are blue.
Worst airport? Madrid-Barajas, because it´s Iberia´s main hub.
Worst beverage? any beverage served onboard any Iberia flight
Worst takeoff? Iberia
Worst landing? Iberia
Worst fleet? Iberia
Worst network? Iberia
Hahaha, I can ask you about cars, TV
stars or even umbrellas...you will always answer "iberia this, iberia that".
My last long haul flight was 10.5 hours long onboard an Iberia Airbus A340. Every passenger had at least 1 beverage with each meal service (2 services during the flight). During the rest of the flight, complimentary beverages and sandwiches were available at the rear galley...I had 2 beers and 1 coke during the trip, plus the other 2 beverages I had with my meals (dinner and lunch)...it makes 5 beverages...nobody yelled at me and I had a pleasant chat with the cabin crew members for about 30 minutes.
In your case, maybe the rest of the passengers had lots of drinks so there was nothing left for you.