Ground deicing of 737
I was a passenger on a flight from Geneva to the UK a few days ago. It was snowing at Geneva when our plane arrived and we were embarked after some delay due to queues at security. When we were pushed back we had not been deiced and the wings had snow on at least two thirds of their span from leading to trailing edge. There was probably ice under the snow but the snow was too thick to confirm that. I am but a humble PPL/IR but I was most concerned about the situation. I managed to make sufficient fuss in the cabin as we taxied for takeoff to persuade a member of the flight crew to look at the wings from the cabin. We were then told that we'd be going back to the deicing area to be deiced. This involved halting taxiing for a few minutes as we taxied back for deicing. Subsequently we were deiced and had an uneventful flight. Was I right to be concerned or can a 737 reasonably expect to takeoff with some snow and ice on the wing?