I'm afraid I'm going to have to disagree with the above. I went to Cream last year when Tiesto & Tall Paul were playing and I have to say it was probably one of the best nights out I've ever had. Fair enough it was the first week in September so it wouldn't have been as busy as it was in July and August but the atmophere inside the club was still amazing.
I am a huge Tiesto fan which may have some influence on my opinion of the night but if you like this sort of thing ie Tiesto and PVD I would say you would be mad to miss it! Everyone likes different things (thank god otherwise the world would be a boring place!). I say give it a go and make your own mind up.
Oh and just to show how much I did enjoy it I've arranged my 10 day trip to Ibiza this year to allow for two trips to Cream on Thursay nights!