Quote Candt: "Heard stories of people being charged to have the whole garage floor resurfaced because of oil spots."
Sorry mate, that's complete rubbish, a typical horror story. In order to clean a garage floor from oil spots you only need a kind of petroleum benzine and the floor is fine again! These kind of stories is just to rip of inexperienced or clueless tenants!
Otherwise I wouldn't worry to much about an inspection, they hardly look to deep into detail. The only thing which would bother me is why are Ray White coming every 3 months??? Is that legal? I remember briefly that I've read somewhere every 4 months as a maximum is allowed.