There always seems to be one recording that gets overplayed each year. You're sick of it by the 3rd room, and by the end of the show you would willingly strangle every single person involved in its production.
I've never attended AXPONA, but I'm an RMAF regular. Ya, you get tired of the female vocals, but more and more rooms are moving toward having a music server with a large selection available, and letting the listener use a tablet to choose what they want. I like that setup because it means I can usually find something I actually like while letting the exhibitor stick to things they know should sound good on their gear. It's a nice compromise between "everything goes" (let me tell you about the time I got stuck following the same guy from room to room, and his love of compressed German industrial music) and "my way or the highway," where the exhibitor plays the exact same dull tracks over and over again at a set volume with no input from the audience.
That's why I always loved AK Fests. Everyone played all sorts of music. Not just the audiophool stuff which drives me nuts. Had my share of shows so no more for me thank you.