I signed up for a hotel rewards program for the hotel chain that will host next year's RWA National. It was minimal, but it was something.
Judging from a survey of some cheap hotel sites, I won't be able to save much if I stay in the conference hotel, but at the same time, it's much nicer to stay in the conference hotel. Then you have someplace close to stow your stuff, and don't have to trek somewhere else when you're exhausted. Will ponder this further. I plan to be in San Francisco for longer than the conference lasts, so that will be a factor as well.