Collected at airport on arrival. Activated a day after we arrived in city to maximise benefits, so used contactless card on metro from airport to city centre. Card came with list of valid attractions (though this could be improved in terms of presentation e.g. alphabetical and location) and a very useful street /metro map which we used throughout our stay. Unwilling to queue for 2 hours we missed out on using it to access Belim Tower or ride Tram 28 but it was great for accelerated entry to the Castle.. Result! Well worth having for convenience especially as it provides access to all the different modes of transport in the city, we tried them all, Metro Bus, Tram and Train and Funicular! And for those that are unsure its valid for the number of hours from the time that you first use it so 72 hours can be used over 4 days and 48 hours over 3 days if you wish by activating part/half way through a day.