Depends really, if there is no event on Cobras queue will reach between walk on and 30 mins max (normally at the beginning of the day, or after most people have done Edge) By 1.30pm for a while it goes down to little as like 2 minutes, it then builds up and stays around 5-10minutes after that normally. River Ride stays at around 10-15 minutes, Wave Runner is around the same although has been known to reach 30 minutes, Jumping Bean can be walk on - 10 minutes and Edge can be walk on - 30 minutes. Thats based on an average day if it's sunny with around 3500 people on park.It's all about hitting the rides at the right time, Cobra is often very slow in the morning and creeps around the track, because of this car dispatch is on average is 45 seconds rather than 25-30 seconds, which happens after sort of 11.30am, on average it completes the lap 10-15 seconds quicker in the afternoon.