Another old Vegas institution is about to go bye-bye. The Riviera — the oldest hotel-casino on the Strip — has been purchased by, of all parties, the Las Vegas Convention and Visitors Authority. They're the folks who run the convention center there. The Riviera will close May 4 and be torn down so that the convention center (already one of the biggest in the country) can be expanded and extended to Las Vegas Boulevard. It will be huge and it will be awesome but unless they move it to another city, it would still be a terrible place to hold Comic-Con International.