If you plan to camp (like we did), bring all camping necessities. Make sure to bring two extra outfits for your nugget per day that you'll be there. Our favorite nugget accessory on this trip was out KidCo PeaPod travel bed and, of course, our Osprey Poco AG child carrier. Packed snacks are a must.
To secure a campsite at Cypress Lake Campground (campground with trails connecting to Indian Head and The Grotto on Lake Huron), you must book in January as soon as registration opens on the Parks Canada website. July and August are its busiest season, along with long weekends. I suggest going in June if you want the opportunity to explore with less people on the beaches and trails.
If you visit during the week, it's a little less busy than it is on the weekends. Which means faster service, fewer line-ups and waiting - key incentives when traveling with a 16-month-old, as we did.
I highly recommend visiting this area in June, as July and August are extremely busy.
The most expensive part of this mini adventure was the ferry we took to Flowerpot Island. You can save money by doing this activity during the week (C$4 less per person).