I eventually got to see this exhibition. I have been interested in all things Egyptian, since, as I young boy, I saw pictures of the treasures.
The exhibition is wonderful. There are two introductory films each about 5-8 minutes and then you are led to exhibits showing each of the chambers in the tomb as they would have looked when Howard Carter saw them for the first time.
This leads to a display are where the replicas are then laid out to best advantage. One of the advantages of having replicas is that you can get much closer and see more detail than would be possible with the real artifacts.
The audio guide, included in the admission price is well done, but you can just as easily self guide as there are descriptions at each exhibit.
I spent just over an hour there and it cost €16. Well worth it IMO. car parking is vaialble on site, and you can get a discounted price for this if you register online