The PetStay program is a great option so you and your pal can stay in a great hotel and still have access to a casino close by. All of these locations are part of the “ PetStay” Casino program. Pet-friendly hotels and casinos in the Las Vegas area include Caesars Palace, Paris, Planet Hollywood, Harrahs, Flamingo, Bally’s, Rio, and The Quad. Good news! Dogs are allowed in most casinos as long as you follow a few rules and guidelines. If you are planning a trip to Las Vegas, you may be wondering if you can bring your furry friend along for the fun.