Three of us couples spent a day recently on Mackinac Island (new experience for all of us). One couple was from NJ, one from New Zealand and then us from MI. We loved it and wished we had booked rooms to stay overnight one night. Loved the atmosphere. Ate at Goodfellows, which was recommended and food was excellent. We were going to take the public carriage tour but realized that for $4 more per couple, we could take a private tour and see so much more and learn so much more. We had an excellent tour guide with Nate. He was very informative and even extended our tour time. Highly recommend a private tour guide but keep in mind that if it's just a couple or 2, it will run more than the public carriage tour substantially. You might try and find other couples who would be willing to split the cost even if you don't know each other.