We haven't been for ages but exchanged some tesco vouchers just before i got my BFP so all thrill are out for me too, we are hoping to take our daughter when kida are back at school and i was hoping to go on rides with her, she's 2, so I'm hoping that's not out the question.
regarding queing though, yes you can still queue and cross the ride at the end, there are lots of people who do that if you have bags you cross over and put them in the wire racks and come back to ride.
regarding other things to do, there's the gardens, sky-rides, amusements, fair style stalls and lots more tame rides like boating etc, try their website, gonna go on myself. x