How to break up long lines of code. (Example Line: Results of method call added to list.)
I would break it up something like this:

shippedItems.AddRange(
    OrderItem.Fetch(market: this.MARKET,
                    shipConfirmState: ORDERITEMSHIPCONFIRMSTATE.NONE,
                    orderPlacedAfter: serverTime.AddDays(-7),
                    orderPlacedBefore: serverTime.AddHours(-85)));


Depending on previous indentation, some lines might flow over the "max line length", but I think that characters per line is more of a suggestion and there are good times to break that rule because breaking it leads to code that is more readable than code that doesn't.

Rules that I find helpful:


New line after an open paren.
Line breaks after commas.
Indent the inner method calls.
Line up parameters to a method that are on new lines.
Break "max line length" rules if it means the code is more readable.