According to a Queer Grrrl: How to Have A Campfire in Toronto Public parks such as, Toronto  Island and Dufferin Grove give you a chance to try somthing really different this winter.    The romantic and sensual feelings of cuddling up with someone extra special, or the  commadre amongst friends making a S'more. Toronto Island The Toronto Island is a Chilly Mistress. It is always colder on the Island than any where in Toronto. Prepare for a day on a rougher terrain than downtown. It's real ground, not the running track. Dress for function not fashion. In other words, layer up. Break out the wool socks and thermal underwear. Bring food that is easiest for you to cook. if you are a chef who gets how to work a flame, than this is a great place to show off those skills. if you are more of a hot dog person, stick to hot dogs. Be they all beef or vegan, they are going to taste even better when the flame hits it. To get the process going contact the permits office . This link from Yelp was the best explanation that I could find of what to expect when discussing the fees and insurance issues. Its not cheap or easy to have a campfire on the island. But its a great backdrop for just getting away from it all and still be able to take public transit. Here is the map to get you started in planning on your adventure away