Its a massive place now with around 3000 personnel there. Its easier to get out on night leave and for you youngsters who need plenty of junk food to keep you going, there is a Maccy Dees right opposite the main gate.
Fareham town centre is about 2 miles away and Gosport is also around 4 miles away.
As Tattodog has alluded to, it is a bit less restrictive than Raleigh, but you will still have the usual training school things to do, so do not expect to much leniency etc.
Enjoy it, but most of all remember you are still under training and ensure you don't let yourself get dragged into the slippery slope of 'you cannot teach me nowt' syndrome.