As to para two, when I say e-ticket receipt, I mean the eticket receipt from the Amadeus or Sabre GDS, not some waffling 20 page print out from Expodobookers.
These "waffling 20 page print out from Expodobookers" things are a menace for a number of reasons, but some online travel agencies do not provide, or make it hard to access, the official ITR from the GDS. This can be for a multitude of reasons but is often simply to hide the fare details from the passengers. I know that IT/BT, nett remit fares, and so on, do not show the fare paid on the pax coupon, but the reality is that there are a number of things going on in the industry whereby the agent does not want the client to see the fare, or it is simply that the ticketing parameters have not been correctly set up.
Good point from F3G, and it should be obligatory for all OLTAs to provide the ITR from the GDS or CRS.