If you have previously recommended this thread, you should see a tick / check mark on the recommend button. Click the tick to undo the recommendation (the tick may appear to change to a cross as you do this.) If you added a comment with your recommendation, you will need to delete that from your facebook wall separately.
Dh and I went in 2011 and enjoyed it but I found the heat in some of the domes made me feel sick but I was pregnant at the time. There was quite a lot for kids to get involved in amd get messy...they all looked like they were enjoying it. I'm glad we went but not sure would go again while ds is so small.