Things you might want to know; points of interest; news you can use...

Daylight in Denali National Park is almost 24 hours long during most of June and July.  Flashlights are therefore seldom needed.
The main park visitor centers and bus stops may be crowded; the park in general is not.  Reservations at campgrounds and for park bus seats help insure a good wilderness experience.
Deep in the park, wildlife viewing and photography of "the big 5" (moose, Dall sheep, caribou, wolf, grizzly bear)are highly probable. Marine mammals (Beluga whale and Harbor seal) have been sighted in the Kenai Peninsula.
All animals are wild and should be treated with a healthy respect, at a distance.
Ryley Creek campground is at an elevation of 1800 feet, and 63 degrees,43'49.1" north latitude.
Most hiking is done at fairly low elevations - under 5000 feet. Trails for the most part do not exist for people; animal trails can be common and should be avoided by hikers.
Temperatures can be in the 80's and 90's, though not that often, and morning temps can start in the 40's.  And the weather in summer can bring crystal clear skies, rain or even snow. Thunderstorms are rare.
Ryley Creek and Grizzly Bear campgrounds are wooded - mainly spruces. Wonder Lake campground and most of the park are above tree line.
A river crossing in the AM is far safer than crossing the same river in the PM when glacier melt can raise water levels considerably; crossing can become very cold and very dangerous.
Glacier streams are too silty for fish to survive.  Bald eagles usually stay south of the park for this reason, and grizzly bears in the park do not get as big as their southern cousins who have a heavy fish diet.
A park program will educate all of us about dealing safely with bear and moose encounters.
You have seen bugs like this before in New Hampshire.  And if you haven't, you will see them in Alaska.  Breezes usually keep mosquitoes down except near wetter areas, like Wonder Lake.
Alaska is the largest state you will ever visit; the grizzly is the largest bear you will ever see; Mount McKinley, the largest mountain in North America, is so massive it makes its own weather.
When the wind picks up, on socked-in  days, clearing skies usually follow (park ranger wisdom).  It can be foggy in the mornings.
You may get off park buses at any time (except near wildlife) to hike (except Sable Pass - high bear activity), or get on another bus that will slow down when you flag it (except if full).  Then you must wait for another bus.
In case of accident or sickness, medical facilities are in nearby town of Healy.
There are usually more than 100 wolves in the park - 16 to 18 packs, and the largest wolf is 150 to 160 pounds...a big boy.  Different color phases occur, from silver to sable and in between.
Older grizzly bears can be very "blond"; the largest in the park is over 600 pounds.  "Spring cubs" are this year's newborn bears; rarely are there more than 2 per sow.  (We witnessed the only triplet cubs born in the park in 1995 and 2003!)
Losing track of time during days that seem to have no beginning and no end makes a watch handy.  A good compass and altimeter, 2-way radios, GPS unit and even a cell phone (very limited use near towns) can be put to good use while in camp and in the backcountry.
The Muldrow glacier, along the base of Mount McKinley, is over 30 miles long;  glaciers form where snowfall exceeds the rate of melting, and slowly flow like frozen rivers; 100,000 may exist in Alaska, and many (because glacial ice does not absorb blue color, it reflects it) are an intense blue, especially on cloudy days