We used one when we went (2 yrs ago) & thought it was worth every penny. No queuing with 2 small children and an impatient DH! You get over the guilt really quickly! We had lunch while skipping 1 long queue & went to play in the water park bit while avoiding another. In the morning we pretty much found that the walk between rides covered the queuing time. We 'paid' to get in with Tesco vouchers so it only felt like we paid for the qbot.