To be truthful we only came here for the views, which are truly stunning, and expected to ignore the funfair. However, as we had come in May outside a school holiday the place was relatively quiet and quite a few of the rides were not open. But for those that were there we no queues and you could virtually walk straight onto them. However, several had signs on the queuing area saying 1 hour and 2 hours queuing from this point, so heaven knows what this place must be like in high summer at the height of the school holidays.
I think you can buy an all-inclusive 35 Euro ticket (which also includes the Funicular) or individual rides for 3 euros. We relived our youth and went on a couple and the red aeroplane ride was a right giggle.
As a tourist primarily interested in the views, I would recommend trying to visit outside the high season and definitely outside school holidays. But I would definitely recommend making it up here for both the views and the church, both of which are spectacular.