Originally Posted by
corporate-wage-slave
However I have a feeling you can't use your wife's 2-4-1 except via her account, that won't have the "joker", or space opening, and that may be the issue.
Yes that has been my experience, so trying to use my joker with someone elses 2-4-1 was not allowed.
The OP can use the joker and book for the other two members of the HHA, but not with a 2-4-1. As you say since the 2-4-1 requires the voucher holder to be one of the passengers on the booking.