Posted July 8th, 2014, 06:03 PM
Your parents may find something like the HoHo service a good way of getting around all the main highlights. When you get here, you'll see that operating a double decker bus service would be particularly challenging in Wellington's tight downtown area! As it's a popular option on cruise days, booking in advance is a good idea. 17& 18 Nov are double dcruise ship days in Wellington so pre-booking is a very good idea for any particular tour.
If you have full mobility, the easiest thing to do is walk. From the Embassy Theatre in Courtenay Place at the south end of the downtown to the Parliament Buildings at the other end through the downtown shopping and business district will take less than 30 minutes if you're of average fitness - and don't stop! Take a shuttle to downtown Lambton Quay or the i-SITE, about 20 minutes walk from the cruise terminal, and then Te Papa, the Cable Car, the Botanic Gardens, Carter Observatory and then the Parliament precinct and Old St Paul's all lie north in the direction back to the cruise terminal.
Things to do will depend on your interests, but film tours, food tours, Te Papa, and Zealandia nature area are all popular excursions. You can get a lot more ideas at WellingtonNZ.com