How is Yamashiro like?

My friend chose to eat at Yamashiro for her birthday dinner, and based on recent reviews, it seems like it is going downhill. She loves to take photos of the places she goes to which is why she chose Yamashiro Hollywood. My friend made reservations for a big group (12 people). No one is a picky eater or has any allergies that I was made aware of before posting. My questions are mainly concerning the food and the parking. Is there a valet? Is it mandatory to use the valet? Would it be hard to Uber there? Is parking on the street a possibility in the area? What dish would be worth the price given this place and their known price?