Easiest travel option available right from the Airport. Previous travellers reported not been able to collect ticket at Schiphol. Update; collect ticket in Schiphol Plaza near exit, train ticket plaza near yellow ticket machines. The machine is of white color. Press scan ticket and put your phone under scanner with barcode confirmation in email and that’s it. There is also a small vending bus outside the airport between smoking area and hotel pickup, they also sell tickets on the spot incase having trouble with app or net.

The 3 days ticket is great solution! You have to exchange the voucher in the Public Transport Ticket machines (not the yellow ones, they are for trains only) where you will receive a paper to use at buses and other means of public transport in Amsterdam. Sad that tickets are for calendar days not for actual hours (they work till 4:00 a.m. the day after the last day of our ticket), so I had to buy additional tickets to get back to the airport - they could be 24/48/72h instead of 1/2/3 calendar days, as that would probably better suit for tourists.

Apart from the difficulty in not being able to redeem the voucher at the airport - unlike what is reported in the purchase email, it seems you can only change in the stations -, it was a nice experience, you are free to go around Amsterdam far and wide, by land and sea.