Hike
I actually started from down at Hanauma Bay after a morning of snorkeling. I guess that added an extra mile each way and probably several hundred feet. I also did the whole thing in water shoes because I am stupid.
https://www.alltrails.com/explore/trail/us/hawaii/koko-head-crater-trail–2
Drink
No alcohol. Not only did I not think to bring any, but between the sun, heat, humidity, and lack of breakfast, I was literally light headed. I had to stop a few times and sit in the shade to cool off. I fair better in cold and snow than heat and sun.