Does anyone have tips for local transport to interviews?

I need a cheap way to get to several appointments. I am in Honolulu, in case local advice matters. I do not want to be late. What do you use?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

Thanks for writing this out. I went through something close to it 4 months ago, and it settled down once I kept a simple log of every call and form.