9. Tandem kayak in Abel Tasman
But back to adventure! A great, low-impact adventure to have together is to go tandem kayaking. There are several places in New Zealand that you can do this, but I think one of the best is in Abel Tasman National Park at the northern end of the South Island.
This is a STUNNING national park that usually has good weather, and getting out on the water in a kayak is the most popular activity here after hiking.