I don't think this deal is worth it.
You can't really eat that much in a day to justify the cost. The only way to get your money's worth is to really stuff yourself all day. In order to do that, you will have to time everything correctly and it just takes away from your vacation enjoyment. It felt like the first 24 hours of our vacation was all about trying to make the pass worth the money. Not the best way to enjoy your time in Vegas if you ask me.
If you are on a mission to try a bunch of buffets just for the sake of trying it, then this pass is for you. Otherwise, the cost-versus-benefit is just not there.