no, only at time of booking.

Did have a fair share of trouble with it though, ticket could not be found at some point and took an hour to resolve while at the check in desk. Also Qantas found it useful to issue a separate ticket for domestic flights (as infants can be added free or charge in Australia (leaving me.with an issue when I tried to leave Fiji.

So make sure they actually issue the boarding pass on the correct e-ticket to avoid issues further down the line.