First time hooking up

Guys I am still a virgin in the camping world,next weekend will be my first venture onto a site with my motorhome.I have obviously had the motorhome outside and been through the ropes plugging the van into the mains in the house and so on.Couple of questions when I go on my pitch and hook up will there be a tap there so I can fill the water tank,will I be able to empty my normal washing and showeing water at the pitch ,someone told me to take a extra long aerial lead as there might be an aerial point to plug into.And finally can you put windbreakers up outside the motorhomes around your awning area,again my apologies if these questions seeem to be a bit stupid,but as I say I am a camping virgin.....thanks in advance...