Quick connects are famous for leaking. If you can't tighten it, you may have to have it silver soldered, which is the way most AC lines are connected. An HVAC tech can do this quickly and realitivley cheaply.
Well, maybe the fan is over worked or maybe it is over heated. So therefore, just try to fix up the vent and the leak. Also, you may need to replace the fan.
Two of the most common reasons for a freon leak, in your air conditioner, are ruptured lines or condensers. Since freon leaks can be dangerous have a HVAC specialist inspect.
It is unlikely that the liquid dripping from you air conditioner is Freon. The cooling coil and the return line to the compressor are colder than the air around them and that will cause water to condense from the air. Freon turns to a gas at room temperature. When you
