We bought and paid for a 72 hour pass. What was NOT made clear to us was the difficulty of getting the passes if you arrive close to 19:00. We landed at 18:45 and got outside at 19:04. All of the collection points are closed after 19:00, most surprisingly the one in the airport was as well despite the actual tourist info desk still being open. The issue here is we were planning to use the bus or tram services from the airport and in the end had only one real choice and that was a taxi, especially as the main train service was disrupted due to engineering work of some sort. The taxi was the only way to ensure we got to the hotel and then weren't too late for our booked meal. We could not collect the passes on the following day either as we were booked of the full dat Auschwitz/Birkenau and Salt mine tour...so we left Krakow before the collection offices were open 9am and got back just as they shut again at 19:00. In the end I collected them at circa 09:30 on Sunday...but of course we were leaving on th Monday. We used them for the Oskar Schindler factory, St Mary's Basilica and Rynek Underground.....which would have been cheaper in cash. They do save queueing at the Schindler factory although this is not made clear in the guide book you get with them, or at the factory itself , so we queued for an hour only to find out it hadn't been necessary. Definitely not value for money considering we paid for 72 hours and in reality got around 30 hours usage. If you're in Krakow for a week it 'might' be value, but unless you can overcome the collection restrictions then it really was a waste of money. This was the only negative aspect of our entire visit to Krakow.