Ever get an on-site pump out of your gray/black tanks?

The guy did open the valves first before he started the motor up for suction. He had a clear section of hose so he can monitor progress. The CG does not charge a fee, since it is in lieu of sewer hookups, so they probably compensate for it in their daily rates.

I have to say it was pretty convenient and fast. Although I like and usually use full hookup sites, it's nice not to have to setup your sewer hose, or have to dump on the way out.