I know that snow crab and king crab legs are readily available in Las Vegas. Being an east coaster, I've only had the opportunity to partake of Dungeness crab on two occasions, years ago. Are there places (preferably a Buffet) that serves Dungeness crabs? Either Strip or Downtown, I'll travel to get them.
In over 35 years of visiting Las Vegas, I don't remember ever seeing Dungeness being served at ANY buffet. I was born and raised in San Francisco, so I know what Dungeness looks and tastes like. That doesn't mean that it doesn't exist, just that I've never seen it.
Back in the early 80s, I lived in Northern VA and had Dungeness crab legs at a Chesapeake Seafood Restaurant all you can eat place. They were seasonal.
Back in 2010 we ate at the Village Seafood Buffet at the Rio. They had Dungeness crab clusters. It was sweet and delicious. Not sure if they still serve it. I've never seen it anywhere else. But maybe someone else can chime in. I love Dungeness crab.