Last minute change to our terminal and gate made our well-planned departure hectic and less enjoyable experience. Luckily we were at the airport 2 hours before the scheduled flight. We were moved from Terminal 2 to Terminal 4 right when we arrived at the gate. Although Delta had a shuttle that allowed us to move terminals without going through security a second time, the shuttle dropped us off at the bevy of the terminal. We had to walk over 3 miles to get to the very last gate, and the moving escalators were out-of-order. It also did not have any bathrooms or fast food, even just hot coffee, nearby. After reaching our gate, my son who has asthma was sweaty and had to use his inhaler again.