U missunderstood what I said.maybe because i didnt say it all lol but what i meant is that there really isnt a way to tell whether your supposed to play it at the 12th fret and higher or at the 7 th fret..Sure It could put a note at the twelth fret but then it could easly switch back all the way down to the first position with out telling you or stay in the twelth fret area..theres no real way to tell unless it says so..like havin the 8va symbol above it
for ex..the cleff will have a C note on it..well it doesnt tell you whether to play 3rd fret 2nd string C or to play the 7th fret 4th string..I know their the same note but if i were to play the same song at different positions..it might sound a little diff..well to me it would
Az..I will take his advice over yours considering hes been reading music longer than you have been alive

My little advice would be do what sounds good to you