Changing white balance in the field?

I´ve just learned how to manually set the white balance with a white sheet of paper or a neutral grey one. But on vacation, it´s not so handy doing that with every shot.

What do you do?

Do you set the WB to auto, and correct it in post?

I tried the color temp on my camera, and I came pretty close to the manual setting, but the color temp gave me a bit greenish filter.
Don´t know it it´s noticeable on a video on Vimeo, but I(!!) notice it.

Any advice?

Just find anything white around you. You'll be hard pressed to not find something white enough no matter where you are. When I did weddings and concerts, we did lots of run-and-gun, and lighting changed a lot. We'd find a table cloth, part of someones dress, matte of a framed picture, anything. It wasn't always 100% perfect, but it was way easy to fix it in post, since we were really close.

Ok, good to know. I´ll try to have that in mind. It´s frustrating when you can´t correct WB in post.

I´m fan of raw-images either if it is video or still images, so I need my work to be as perfect as possible.
But I know we live in a world where we can do almost everything with a image to improve it.

Paul Wex' video are very good, and almost every clip is raw. As far as I understand.