I went to the RMAF last year. It was great! A few of us from this forum attended, so it was nice meeting and talking about audio with some fellow members of the MLOC.
I am not sure how much hi-end audio gear is that the CES, but the RMAF had several dedicated hotels to this event. There were well over 100 rooms (including the big suites and ballrooms) that had audio equipment. Unlike the CES where some stuff (not all) is just a display, there's more interaction. Everything is setup so you can listen to the systems - even with your own music if you like. There's also tons of seminars (a few of us attended the Nordost cable presentation and thought it was interesting).
Erik