After a three week trip, we are spending our last few days in Auckland. Knocking off the arrival and departure (both by plane) days, we will have two full days in the city. One day, we plan to just walk around the town (recognizing this is not enough). On the other day, we'd like to get out of the city. Is a day trip (via a tour -- we won't have a car) to the Waitomo caves or a different day trip worthwhile/doable? Thank you.