Design a detailed floor plan for an restaurant for elderly people, including wheelchair accessibility. The auditorium should feature comfortable seating arrangements, easy access points, and ample space for mobility aids. Ensure that ramps, wide aisles, and accessible seating areas are incorporated to accommodate wheelchair users. The design should prioritize safety and ease of movement for elderly attendees and must not include stairs. Provide the floor plan in high resolution and include a comprehensive and legible legend with the names of each element and section of the auditorium, such as seating areas, stage, entrance, exits, and accessible features.