RE: Reporting ShipTo/BillTo Address Formatting

You could try an expression like this:

=First(Fields!address1_line1.Value, "DataSet1") + VBCRLF +
IIF(IsNothing(First(Fields!address1_line2.Value, "DataSet1")), "", First(Fields!address1_line2.Value, "DataSet1") + VBCRLF) +
IIF(IsNothing(First(Fields!address1_line3.Value, "DataSet1")), "", First(Fields!address1_line3.Value, "DataSet1") + VBCRLF) +
First(Fields!address1_city.Value, "DataSet1") + ", " + First(Fields!address1_stateorprovince.Value, "DataSet1") + "  " + First(Fields!address1_postalcode.Value, "DataSet1")