The 69 learning and development requirements elements of the Early Years Foundation Stage are mandatory for all early years settings - unless that is, the setting has managed to secure an exemption (as some Steiner schools partially have done).
It is interesting you mention the term 'free play'. There is a huge debate going on at the moment about play - in particular, whether or not the EYFS learning and development requirements truly facilitate 'free play' or not. My understanding is the opinion of play specialists is veering towards the view that the EYFS learning and development requirements restrict 'free play' in it's true sense, because children inevitably behave differently when they are being so closely observed with a view to meeting such 'targets-in-all-but-name' as they have been called.
But don't take my word for it! Do some more research of your own...if you can - here are some links (which contain links to more links...!)
Try Googling 'Parent's Guide to EYFS'...for some pointers (both government and alternatives)....
Also there is another thread I started on mumsnet which may interest you see:
[http://www.mumsnet.com/Talk/preschool/884496-Parliamentary-petition-to-downgrade-sixty-nine -early-years-foundation-stage]
(This thread gets quite heated at times...but don't be put off...)
See also Open Eye's video (I am not a member of Open Eye by the way, but I think the vid and info are excellent...this one features Dr. Penelope Leach who has been a child care expert for decades...)
For the vid see:
[http://openeyecampaign.wordpress.com/video/]
Good luck no one source can answer all your qquestions and I can't pretend to, but happy ssearching...
best