We've done the "stroll and ride" tour at Na Aina Kai Bontanical Gardens many times. It's always different and always interesting.
An easy activity for those who don't want to walk too much, you ride in a golf cart type vehicle for part of the time and walk part of the time. The volunteers are very knowledgeable and each do a slightly different tour.
If you go in June (and I guess April, May, July), you will see young Albatross getting read to fly away off the cliffs in Kilauea. They are very special and are protected there.
Lovely gift shop. Amazing, whimsical sculpture. An incredible selection of native and non native plants and trees.
Our friends and family who go with us to Kaua'i always find this tour to be one of the highlights of their visit!