Jeff, I think some of your questions were not clearly answered. The majority of the audio equipment at THE Show and the hi-end audio portion of CES (Venetian) are in hotel rooms and suites. Those are complete systems in dedicated rooms ready for you to listen to. Most vendors will accommodate requests to play your music. A few audio systems are set up in larger meeting or conference rooms but again, those are dedicated rooms.
The "bull pen" exhibits you are thinking of are at the main convention center which is sometimes referred to as "the zoo". That is the TVs, computers, cell phones, you-name-it territory. That is very different from the hi-end audio exhibits.
I have a rule-of-thumb (others may disagree). If it sounds bad at the show that does not necessarily mean anything. If it sounds good at the show then there is a reasonable chance it can sound very good in your home. That is provided you don't violate any requirements of the equipment e.g. your home does not have enough space to move the speakers away from the rear wall. Also be aware of the electronics driving speakers. Sometimes the system can sound very good but the cost of the electronics is many times the speaker cost and not likely to be duplicated in the home environment.
My advice, You just gotta try it once. CES is an experience that does not lend itself to the retelling.