Agree with all the above (we were there over easter) but just add one more piece of advice...think carefully about footwear. The ground is very rough, obviously you have to walk across it to get to the various rides, and if you wear flip flops, you cant wear them on the slides. One answer to the problem, which my husband used, was to wear his flip flops til he got to the front of the queue, and then he put them down the front of his shorts.....looks odd on the photo's but saved the feet from getting cut! Also try and avoid going on a bank hoilday...we went on maundy thursday (a bank holiday for the spanish) and it was heaving with spanish teenagers, making the queues much longer (and louder.....they do jabber very loudly!).