We have "twin" pedestals here, so I'm borrowing the non-existent neighbors.
We have 161 sites, with only 3 visitors. Boss here said feel free to use the other 50 amp. Under normal circumstances, we would use the 50 to plug in the w/d, and plug the rig into the 30...we only have one a/c, so I doubt if there'd be much of an issue. I can always simply unplug the w/d and plug in the 'tana to the 50 if there was such a necessity. We really only need such a setup for long term gigs...we're on a 6 month one now, so it qualifies.
Hope this helps explain things.
Bill