Last week I was flying with Air Baltic from Rome to Riga. I like Air Baltic, their staff is polite, caring, and service is good. They even SMS when delays happen.
The flight BT632 was officially delayed at first by 1:55, and later – for another 30 minutes.
After discovering about excess of 2h delay I contacted the airport staff at the gates and inquired about the procedures and obligations towards providing the meals to the passengers. The answer I got that the service will be delivered on the aircraft, as boarding will start soon.
On the airplane further delay happened due to one missing passenger and offload of the baggage, but it did not exceed 3 h in total. Delay was due to change of aircraft in Riga after noticing a malfunction in the original one.
I asked flight attendants regarding delay and passenger rights to get free beverage and meals. I got different replies. I talked with four ladies (including one senior one), trying to understand the rules.
For me the total surprise was that no one (including of course me) knew the regulations, and there was not a copy of them on the aircraft. In airport there were copies somewhere advertised, but I was not in a hunting mood during boarding time. I vaguely remembered from my experience as frequent traveler that there is a 2h threshold which provided passengers with small package of food – usually a sandwich and a small bottle of water. Air Baltic cabin attendants (Viktoria, Marija, Marta) were polite, but could not explain the rules. They argued that they do not have food, thus they are not going to provide the service; that the service should have been provided in the airport; that the airplane is fully loaded, thus there is no place for food. One flight attendant mentioned that the threshold is 3 hours, but could not explain how it relates to 2 h which I was aware of. Senior staff member acknowledged that 2 hours delay is the correct threshold, but the service cannot be provided, thus I should complain to the Air Baltic customer service. Telephone numbers printed on the form are the wrong ones in Lithuania, and for Latvia there were only for local calls. Staff provided with direct contact names in Riga office and email addresses. I really believe and feel that staff tried to do its best to service me.
Today was on the way of writing an email to Air Baltic customer service to investigate further. At first I prepared – read the Regulation (EC) No 261/2004 and measured the air distance between Riga and Rome. Distance was around 1600 km (more than 1500 km), thus threshold appears to be 3h, i.e. I was not supposed to get any service I was inquiring, complain dropped. I wish for Air Baltic staff to go though the rules of the regulation as well, to know what to answer to such knowledge hungry passengers like myself 
The final question I still wonder about – why no other passengers were rising the questions I was asking? Did they know the rules, or they were just not interested?