Here's more details on the hiking. All of them are out and back walks from our vehicles, so if anybody wants to back out they can just turn around or carry a bag chair for some breaks along the trail. You could also just hang at the rigs to cook hot dogs or do some maintenance.
Hike 1: Summit Peak (Porcupine Mtns): Since they put in a parking lot and vault toilets up on the hill, this is now a 1/2-mile hike each way. It's very lovely old forest with "mountain" terrain, ending at an observation tower that puts you right at about 2000' elevation. At 1958', this hill is the 3rd highest in the state (none reach 2000'). This may not be high in the absolute sense, but keep in mind that Lake Superior is 600', so the Porkies do rise like 1000' in a mile.
Hike #2: Lake of the Clouds (Porcupine Mtns): Although it's not a long drive from Summit Peak, there is almost no hike required to see one of Michigan's most famous views. Not much I can say that isn't on a lot of web pages already:
http://www.superiortrails.com/porcupine-lake-clouds.html
Hike #3: Bare Bluff (Keweenaw Point). The destination is the top of that rocky outcropping, where you can see up and down the point, Bete Grese, Mt. Houghton, Smith Fishery and if it's clear, across the Bay to the Huron Mountains (about 30 miles due South). This epic view really gives the feeling of being on top of the world.
As the sign shows, Bare Bluff has a 3-mile loop, plus the 1/2-mile path to the parking area. We will do only the upper section to reach to summit, then turn around and go back. The North section is just a footpath through the woods, which gains elevation slowly. The East section drops through rocky ravines, then runs narrow shelves and switchbacks down the face of the cliff. Really, it's for advanced hikers and rock-climbers. As cool as it is, we'll save time and just walk back out the easy way. That's about 1 mile in each direction. Obviously you have to take some time at the summit to enjoy the view before heading back out. The walk is also slowed significantly when the thimbleberries are out! (Yum).
http://www.summitpost.org/bare-bluff/514501
Hike #4: Sturgeon River Gorge: Hopefully we have time for this, as it's quite scenic.
http://www.wilderness.net/NWPS/wildView?WID=582
Assuming it's open, we will camp on a ridge above the gorge, such that you overlook a big expanse of gorge, woods and river. It's possible to hike down to the river from here for swimming, bathing or fishing, but it's definitely challenging. There is also an official trail down the road a bit, which breaks up the elevation change over long switchbacks. It leads to the largest of the falls:
Here's my best frame of reference for the difficulty. On a nice summer day, you might find 2 dozen people swimming below the falls. Some days you won't see anybody. My 3 year old and 6 year had to be carried part of the way back. The 10-year was fine.