Hi,
It depends on how often you plan to use these pitches and how much, or little, you want to spend.
On super pitches as well as having direct access to drainage and water you often have extra space. I have often seen people on these pitches not directly connected to waste and water but enjoying the extra space plus the convenience of having drain and tap close by. This option does not need any extra accessories.
To connect to water you will either need a connection which goes direct from water tap to your water connection at the side of your van. This does away with the need for an aquaroll or similar. I have never used one of these but believe it has a reducing valve to limit the water pressure into your van. You can buy these already made up, it is possible you may be able to make one up yourself although I have never heard anyone talking about that.
Alternative way to use mains water, and my own preferred method, is to make use of the aquaroll mains kit which fits into the side of the 40 ltr aquaroll (the smaller size does not have the side opening) The aquaroll mains kit can be purchased from accessory shops or Towsure. You can make this yourself and save a little money. It is basically a small ballcock valve(this fits inside aquaroll) and length of food quality hose plus connections. I think one or two are selling them on Ebay.
Waste drainage is more simple. Buy extra lenghts of waste piping or rig something up with domestic style waste piping. The 32mm push fit fittings seem comparable with the grey waste pipes on vans.
The mains water connection, which ever way you choose, is the most expensive, the waste is comparitively cheap. It is a one off purchase though then you can use it whenever on a pitch with extra facilities.
Robert