You'll find a new playground near the Sanctuary Warpstone, rival summer camps near the Greenwood Forest Warpstone, and you'll have a chance to spot Bigfoot. The furry guy is on the loose in the area, so keep an eye out for your opportunity to do battle with him.
The Marketplace includes new summer camp items such as campfires, tents, camp banners, and special marshmallow pets (there is no word regarding the ability to roast them on the campfire.) The summer camp update also brings a new subscription option to the game. For the full list of additions, check out the Free Realms site, then visit the new areas in game to give them a try firsthand!