Or you get their fastrack tickets. The website has details.
It does suck that you pay a fortune to get in but, if you want to actually get around all the big rides, you have to pay extra. My wife and I went to Thorpe Park and queued for an hour and a half for the first ride we went on…after that we paid fastrack so we got to do the rides we wanted consoling ourselves with the fact we managed to get discounted gate tickets.
At Euro Disney the fast-track system is free: you just go up to the ride, hit the button and it gives you a ticket with a time which seems much fairer.
…having said all that, Stealth is absolutely the best ride we’ve ever been on. Only ride I’ve was actually ready to get out of after being seated. Then my wife made me go on it again (2nd time we went when it was more out-of-season).