Spreading out over a scenic bluff facing Lake Rosseau in Muskoka, Ontario, about 145 miles north of Toronto, this JW Marriott resort appeals to those looking to soak up the great outdoors.

In March, the company Live Incorporated posted schematics on its website for a 20,000-person concert venue to be built at the JW Marriott The Rosseau Muskoka, a luxury hotel on the shores of Lake ...