AC Hotel by Marriott & Element by Westin – Symphony Park, Las Vegas Now Booking September 1 – December 31, 2025 Be among the first to host your meeting or group at Las Vegas’ newest dual-branded hotel, perfectly located in Symphony Park. To celebrate our grand opening, we’re offering exclusive perks designed to deliver value, flexibility, and unforgettable experiences. Receive 10% rebate off of the master bill when you contract by October 31, 2025 and hold your event between September 1 – December 31, 2025.