Several car parks here, all accessed from the main entrance which is barriered, checks your plate and then you need to pay before you leave. I was just over an hour and was £5
Is hilly in parts, most paths are well maintained tracks but lots of other areas to explore including woodland paths. Are bikes, and horses around.
No water here
Bins in main car parks.
There is also a dog wash, and secure dog field here too - check website for details and booking
I did no research before heading here, and seeing now how much there is I would recommend checking it out before you go so you know which areas you want to go to. There's several walking routes, various play and activity areas, picnic and bbq spots, and a cool dog agility area as well (this is just before the final car park, you'll see it on your right as you head up).
https://www.hants.gov.uk/thingstodo/countryparks/qecp
Driving in almost feels like you're heading into Center Parcs or something, as you go through the barriers then there's lots of signs to various different car parks and areas. The first car park has the facilities and visitor centre, I kept on going to the furthest car park called Juniper which also has toilets and pay machines.
As you'd expect there are lots people around with walkers, picnickers, cyclists etc. but for our walk once we were past the main play and meet areas near the car park the walk was pleasantly quieter. We only touched the surface with our walk through woodlands so if I went back again I will definitely plan my route a little better. We did enjoy a quick play on the agility course before heading home, Hank loved it but will not be appearing at Crufts anytime soon!