Well, JD, I bracketed and over many rolls found the best prints came from exposures between one and two stops over. It was E200 that was past expiration, but not suffering otherwise. And I don't know enough about those processing machines to say, and I was only guessing about 'exhaustion', but my shop insisted upon doing them at the end of the week before whatever replenishment/replacement system they had going. I assumed replenshment extends the intervals between complete changes.
What we're both telling BWPositive is that any 'one hour' outlet can process his film without concern (and at low cost) and he may need more exposure.