The prime rib at Mackinaw's is exceptional and one serving with an extra salad is more than enough for both of us. We ordered ours medium rare and it came out perfectly. Service was great and the views of the lake, high country mountains and marina out their huge picture windows unbeatable. The Marina has changed hands but the quality staff there and at Mackinaw's has remained and we strongly recommend this special place. They are only open from April 15 to October 15 along with the adjacent Indian Peaks Marina. If you're just passing through, a local or summer visitor you should plan at least one Saturday night prime rib here. You won't be disappointed.