Alitalia has to be the worse airline ever, here is my horror story, I will try to make it brief. After saving for a long time we planned our trip to Italy, we took DAL with no problems from Atlanta to Miami then we were taking Alitalia from Miami to Rome then boarding on a smaller plane to Venice. We had visited their website regarding carry on size and we were completely in compliance. When they were finally ready to board we headed down the ramp to board the plane, the guy behind us had a regular size suitcase not the carry on size, but the agent at the door of the plane singled us out, he told us we could not carry our bags onto the plane, he said the overhead bins were full and our bags were too large, he told us he was in charge and could pull passengers aside as he wished, we requested that he measure our bags he said NO, he was getting mad, then we asked him to check to make sure the bins were full when we boarded all the overhead in our area was EMPTY. Anyway we were trying to explain that we packed the carry on so we would not have any problems, he was now tagging our luggage and putting it out the door, we explained to him our Euros and medication were in those bags he said "Get on the plane or I will take you off the plane", so we boarded. When we arrived in Rome we requested that they check to make sure our luggage was on board they said it was. When we arrived in Venice only one bag made it the bag with the Euros and medication did not, after standing in line for a hour the agent at the window told us it was now in route to the airport and would arrive in several hours. So we missed our event in Venice that day and waited on the last piece of carry on luggage, missing a 1/2 day in Venice is pricey, we contacted the airline and asked for a partial refund they basically told us to take a leap, they did not care and would not check into the incident, we asked them to review any video tape and talk with the out of control employee who did this to us.
Once we were on the plane the Italian guy who had the full size piece of luggage came up to talk with us he said we were singled out because we were Americans, and he then proceeded to show us overhead bins with large luggage in it, remember we measured our carry on and it met the requirements.
This incident just about ruined our long awaited trip to Venice and Tuscany, I agree with another person who posted comments online I would rather take a row boat to Italy than fly this horrible airline again. This airline should be shut down, there is not any reason for an employee of this airline to do this to a passenger.
In closing DO NOT FLY ALIITALIA THE WORSE AIRLINE OUT THERE! They do not deserve your business.