The Bangor Mall Cinemas 10, which is jointly owned by the Epstein family of Bangor and Boston Culinary Group, has announced the completion of renovations at the Stillwater Avenue Theatre. The project involved adding stadium seating and premium digital DTS sound to two auditoriums, bringing the total number of stadium auditoriums to five. To celebrate the renovations, the theatre is staging a customer appreciation weekend April 28-30 with the opening of RV, a PG comedy starring Robin Williams and Cheryl Hines. Local restaurants and businesses are offering gift certificates that will be given away all weekend.