As a "flying lawyer", you have no idea what is wrong with using one voucher twice?

The voucher clearly states it is valid for "one complementary room night on the second night of a paid Ambassador weekend rate". It is completely unambiguous from the certificate's ToC that it may only be redeemed once.

I know, in forums one should strive to not make strong personal judgements. But in this case I gotta say: Re-using these certificates constitutes fraud. I am absolutely shocked that somebody who claims to be a lawyer can have such a poor sense of justice.