Hamburg pass docking in May 2016

We dock in Hamburg (Costa Pacifica) on 18 May. Our package includes two nights in Hamburg at the end and are intending to buy the Hamburg group pass for two persons for three days which looks like excellent value at about £40 and will get us to the airport on the last day.

As we disembark from 08:00, we want to get our luggage to the hotel asap. and go exploring. Is there anywhere to buy this ticket at disembarkation, should I buy it beforehand on internet and try and make our way by waterbus and normal bus, or (boring but prob wise) just take a taxi to the hotel and go on from there. I have a working smattering of German. We are elderly but mobile.

See your other thread.