We have just booked our holiday to a caravan park (tourer), and we have booked a mains service pitch. It says that this has electric hook up, mains water and waste. Does this mean toilet waste, or is it just from the sink, shower etc? On the door to my toilet cassette there is a strange powered socket of some sort. Is this to do with the waste the place are talking about? If so what extra equipment do I need to use it? As you can probably tell we are new to caravaning, so any help would be great.