A couple of more:
Ecco Sandals
As you might expect, I have become an expert on sandals, having not worn shoes in the 3+ years I've lived on this island.
These are the best sandals ever made, by anyone, anywhere:
http://www.thewalkingcompany.com/ecco-chiappo-navajo/27876
I own three pair. Yes, I have a "dress" pair of sandals. They are the only footwear I wear, and they are tough, easy on (velcro) and off, and provide excellent arch support.
At $129 they are not cheap. They are worth it, at twice the price. If you only wear them occasionally in summer, one pair will last a lifetime.
Over the Glasses Sunglasses
http://www.amazon.com/gp/product/B0028NEWD8/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1
Yes, I know they are dorky. These are the least dorky over-the-glasses sunglasses I have found, and they are FABULOUS.
I used clip-ons for years, and absolutely destroyed a pair of $600 prescription glasses. These go over the glasses, and -- best of all -- provide SIDE protection from sunlight. As my eyes have aged, I have found sunlight from the side to be more annoying than sunlight from the front, and these neatly solve that problem.
They are also safety glasses. I do a lot of work outdoors with power tools, and these give me the peace of mind that my eyes are protected from flying debris.
And, finally, they are GREAT for flying. Both Mary and I wear them constantly, in the bright South Texas sun, and love them.
Oh -- and they're nine bucks. We have, like, ten pair floating around in all of our vehicles.