I spent a few weeks camping in the wild in Spain around this time last year - no problems - just keep out of sight and avoid the touristy places.
I heard about being moved on by the fuzz, but never had any trouble.
Also I noticed a few gypsies camping near one of my spots and they looked like they were settled in for winter.
I reckon you'd be OK as long as you didn't spend too much time in one place and kept a low profile and avoided tourist hotspots.
Have a good 'un
(I'm quackers about bikes)
(I\'m quackers about bikes)