Just got back and thought would give an update. Rides were closing randomly during the day, on and off. They were really good at trying to get them back open. Sometimes letting only a couple of carriages go and then closing again for 10 mins. Overall it didn't really ruin the day and we still had a good time. It was declared a bad weather day so can come back for free.
Half of us had annual passes so what they done was offer us 1 free fast track pass for when we return. Not quite the same as a free ticket but better than nothing.
Thanks all for replying.