Marriott Dallas Uptown is getting into the Halloween spirit with Y’alloween, Uptown Dallas’ newest Halloween celebration at Y’all Plaza. Residents, visitors, and hotel guests are invited to dress up and enjoy a festive evening of live music, cocktails, costumes, and Halloween fun in the heart of Uptown. Y’alloween offers a lively outdoor setting to celebrate the season, gather with friends, and show off your best costume.