As it says above - I thought it was great and so did DP and DD - we went early and had a full day there - came to about £100 for the 3 of us - £43.50 to get in and lunch (we all had a proper dinner and a drink) and then pressies (DP gets carried away and spent far too much buying soft toys and pencils and stuff for DD - and one for max too his first soft toy!!)
You can drive around the animal bit as often as you want - there is a little train that takes you round and a zoo bit that you can walk round and a soft toy area and swans that you peddle on a lake and animal displays and a small fun fair - all in all a great day and IMHO great value for money.
DD is 3 by the way nearly 4 but there were lots of kids there of all different ages.