Just came across this post and while I am clearly late to the party I have a suggestion for you @Zooreviewsuk ...
If you do want to reinstate some kind of scoring element to your reviews, why not canvas opinion on the different elements that are of prime importance to the different zoo-going populations and give each of them a RAG status as opposed to a number score?
As a photographer I would have a wildly different view of what constitutes a great zoo visit than your average young family. It is so subjective that I think the only way it works is to give an indication of what 'type' of visitor the zoo is going to appeal to.
If you do want to reinstate some kind of scoring element to your reviews, why not canvas opinion on the different elements that are of prime importance to the different zoo-going populations and give each of them a RAG status as opposed to a number score?
As a photographer I would have a wildly different view of what constitutes a great zoo visit than your average young family. It is so subjective that I think the only way it works is to give an indication of what 'type' of visitor the zoo is going to appeal to.