Oshima Mooroolbark All You Can Eat generally receives positive reviews for its fresh and delicious food, with highlights including sashimi, beef tataki, and fried chicken. Around 75% of reviewers emphasize the "amazing," "fresh," and "value-for-money" food, particularly praising the quality and taste. About 80% of reviewers commend the staff's friendliness, attentiveness, and the smooth operation of the restaurant, often mentioning specific staff members like Stephen and Railey for their exceptional service. Approximately 10% of reviews note some dissatisfaction, usually concerning portion sizes, wait times, or specific pieces of food not meeting expectations, such as complaints about "chewy" beef or "spoiled" chicken. The ambiance is described as organized and inviting in most reviews, although a few mention issues with loud music or crowded conditions during busy times.