Just wanted to recommend this as a good trip. They have recently opened up fully after some major renovation work and it is very impressive. Love shows on the weekdays, and children (over 8 I think) can have a go a driving little tanks and for Adults and children over 1 metre can have a ride on a tracked vehicle.
We have visited quite a few times over the last couple of years, but yesterday's visit was fantastic with the new works completed.
Would highly recommend it.