Local Eats: Happy Hour At Hawthorn Grill Hawthorn Grill is located inside the J.W. Marriott in Summerlin. The hotel is attached to Rampart Casino through a hallway but technically the buildings are separate. This is a relatively new high-end steakhouse that opened earlier this year. The restaurant prices are appropriate for fine dining in the … Continue reading Local Eats: Happy Hour At Hawthorn Grill – Review