
Air conditioners are suppose to drip, and if the humidity is high, yes, they can drip a lot.
Weird noises from the air conditioner could be a result of LOW voltage.
Freezing up means the air conditioner is simply set too cold initially and will run constantly, non stop (compressor). The compressor needs to cycle on and off which gives the fins a chance to thaw with ambient heat. If the humidity is very high and the air conditioner runs non-stop, they can ice up. Simple solution is to set the thermostat so the air conditioner just turns on. Let it cycle till it turns itself off. Wait a few minutes and then lower the thermostat till it kicks on again. Wait for it to shut off, then lower the the thermostat a pinch again. Repeat this, giving the compressor and the fins a chance to "thaw". I had this happen only once in my previous camper, and it happened once in our house. Ever since, I've been a little less aggressive when initially turning on the air conditioners. See if that helps.
However, if it's icing up, you won't have dripping.