The Europa Park Resort Passes are now back on sale.
tickets.mackinternational.de
Having a quick look, The Silver Pass looks ideal for us, if we were to plan two visits to Europa Park (Which would be an easier sell if we do not have to pay for tickets).
1 Day Park ticket - €58
2 Day Park ticket - €109
3 Day Park ticket via hotel booking €137
Silver is €240
Gold is €420 but includes two Rulantica tickets (€44 each), so your paying €92 extra to have no block out dates.
It is worth noting the black out dates do not apply if your stopping in any of the Europa Park accommodation, including stopping in a tent. If you are visiting on a block out day (And not staying in the Europa Park Accommodation), and have a silver pass, you need to buy an additional day ticket. So the Gold would make sense if you plan to stop in Rust, where the hotel savings will cover the additional €92 (assuming you visit Rulantica twice) cost of the pass or live locally and plan to visit at weekends.
We would save €34 over buying two lots of three day park ticket, but would benefit from being able to spend half a day on park when we arrive and leave, so saving would be a bit more, and give us more options with what to do and time on park.
I could not see any other benefits that the Gold gives over the Silver. The only issue is the passes need to be activated within 14 days of purchase, I do not plan to visit until next year, so hopefully there will be some more available in December\January time.