Fab, fab, fab.
We went last Sunday and arrived as it opened and were the second group in.
All hands on for the kids dd2 just ran fromthing to thing.We watched the show in the planetarium which my two both enjoyed but didn't get to the slime show as I didn't realise you needed tickets (free show though) and it was sold out.
We even paid with Tesco deals tokens so ended up being a very cheap day out!