Originally Posted by
DLSuites
While somewhat unethical, just don't say anything to the gate agent. Have them scan the boarding pass of the D1 seat and not the coach seat. Same sex passenger, should get away with it. Of course, the boarding pass that wasnt scanned, the coach seat, will be marked a no-show but that person won't get the miles/mqm/mqd.
This is poor advice.
As has been discussed quite thoroughly on this board, it is, at a minimum, a violation of the contract and if caught out, could result in OP having his SM account zeroed out and status revoked, It is also a violation of federal law to access a secure area, e.g., the jet bridge or other area beyond the gate reader, with a false document, e.g., one with someone else's name. Whether it is prosecuted if found out is another question, but advising people to commit violations of federal law because they might "get away with it" is not good advice.
You can also get the funds to purchase a D1 seat if you can't afford one, by robbing a bank and if you aren't caught, you will be just fine. Doesn't make it sound advice to rob a bank.