Although you can just send your smartphone or tablet a copy of all your relevant emails from the airlines and hotels and car rental places, it’s not guaranteed that your GMail will be accessable at all times. Data plans can be a little weak on Kauai. No data means you can’t read your email. One “bonehead simple” backup method is to show each email or its pdf attachment and make a screen capture with the tablet. Now each is stored as a picture in your “gallery”, which is in flash storage and never goes away. Be sure to scroll down on the emails or attachments to get the relevant stuff at the bottom.

I also use the calendar app (which doesn’t forget, but can be updated when connected to wi-fi or a data plan). So my phone has my itinerary and floght names and times an seat numbers.

I like to store the main locations in Google map as “my places”, or some such thing so I have them on a list to just select as a destination for navigation.

I’ll mention again the plan to bring my bluetooth hands-free (clips to car visor) device, so I can use turn-by-turn voice navigation in the rental car. It’s not that I don’t know how to get  to the condo, but rather, to see how well it works, so I can tell you.

You bring up Google Maps and select ‘navigation” and select the destination from the drop-down list. You can put the phone in your pocket. It has gps enabled and bluetooth enabled, of course. You touch the big button on the Jabra hands-free device and the voice says “connected” and you drive off. If you miss a turn it will give new directions with little fuss.