I worked at one... it was... ummm... a good time to get a lot of reading done. I think we saw somewhere between 10-15 patients a day in the "ER". And the vast majority of them didn't need to be there.
I saw one almost-sick person in all of my shifts. The rest would have been just fine if the whole building had been replaced with a Walgreens. But this facility really wanted to have a BC/BE emergency physician there... and they were willing to pay for it.
Pro: lots of down time, easy job,
Con: you don't see much acuity and so fresh out of residency you don't get a chance to see what you really know