Just don't take it to a place without a good reputation. I worked in this mini-lab once and witnessed them doing some B&W. The lab worker, loaded the film, mixed the chemistry in what would have been warm tap water, then dumped it right in the dev tank. Then she went off to the restroom for several minutes, came back and shook the dev tank, put it down, had a conversation with someone for 5 minutes, came back shook it up, then poured in some stop, then fixer for ages. Man it was shocking!