Travelzoo offers a 7-Day Botanical Garden Pass in Hakalau, HI, bundled with Zip Isle Zip Line Course or 2-Hour Mamalahoa Segway Tour for $99. Or, get all three of the above activities for $147. That's a savings of $101 and the lowest price we could find for these Big Island activities. The garden pass includes an unlimited access to the botanical gardens, waterfalls, and children's herbaceous maze. Book this travel deal by April 30.