Without wishing the thread to enter into a philosophical debate, subjective opinions are those which are biased (e.g. my son is the best footballer in the world; unless you happen to be Mrs Messi of course); objective opinions are based on facts and not subject to emotions. I would have thought it impossible for OP to have an objective opinion abut Emirates on the basis of the 'facts' as perceived by him and whether he is biased as in above example or not is another matter.
Anyway, glad he got back and seems genuine aggrieved and hard done by whether one sympathises or not.
I think I have a suggested plot for Alexander McCall Smith's next instalment of the Isabel Dalhousie novels though!