Then get ready for issues. It depends on the hotel. Most hotels, once '2nd guest' is added, are good with that person checking in, however, I have had issues with that as well. They sometimes indeed ask for 'the member' to stop by as soon as he or she arrives.

If you are a complete no-show, the hotel can minimally charge for all Elite benefits, such as breakfast. Honestly, I'd consider potential alternate solutions or at least be ready for a significant bill at check-out.