I wouldn't wear cargo shorts/capris around here, but love them for vacation. I have 10-12 pairs that I save just for vacation. I hate bag check lines and carrying things in the parks. Dick's Sporting Goods and Old Navy sells women's cargo shorts. I got most of mine on ebay though and in fact just got three new pairs off ebay last week. They are really cute and made out of thin quick dry material (Columbia, Carribean Joe, and Dockers in pink, yellow, and tan).

You can also find them online on
Amazon, Zappos, Backcountry, Rei Outlet, and Sierra Trading Post. I also have a really cute kacki cargo skort that I got off ebay a few years ago, if you feel like wearing something that looks more like a skirt. Looks sort of like this one:
http://www.amazon.com/Maggie-Lane-W...F8&qid=1343457195&sr=1-6&keywords=caRGO+SKORT
When going to the parks, I usually put my room key, a cc, AP, ID, and a few dollars into a little plastic divider thingy like you use for a wallet and then put that in a Vera Bradley Zip ID, along with a small lip balm. That's all I need for a day in the parks and it fits easily into a cargo pocket. If I want to take my phone or my small Cannon Elph camera, they'll fit in two of the other pockets. This is the VB zip ID I use. I sometimes snap it to the matching lanyard and wear it around my neck, but usually go without the lanyard and just slip the zip ID into a cargo pocket. My camera is small enough that it will also fit in the VB zip ID, but then it feels too heavy around my neck, so would definitely go in a pocket.
http://www.verabradley.com/product/...Paisley+Meets+Plaid/p/154781.uts?fromSearch=1
Here's the matching lanyard:
http://www.verabradley.com/product/Lanyard/154945.uts