Teton is SUPER.
The town of Jackson Hole is sorta a tourist trap; try not to waste too much time there;
  lotsa trinket shops, but something and move on.
If the Village Inn/Kitchen is still there on the point, the food is marginally OK.
The scenery IN GrandTetonN.P. is absolutely wowieee.

For info and accommodations, see at ...
  http://www.nps.gov/grte/index.htm
  http://www.nps.gov/grte/pphtml/lodging.html
  http://www.nps.gov/grte/pphtml/maps.html
  http://data2.itc.nps.gov/parks/grte/ppMaps/ACF18EE%2Epdf
  http://data2.itc.nps.gov/parks/yell/ppMaps/YELLmap1%2Epdf

I recall the following places to stay ..
 - Coulter Bay Cabins  where we usually stay
        view to the Teton Range is super
        food OK
         reflections in the lake from the shore can be good.
 - Jackson Lake Lodge - where we usually eat
        food GOOD; great view of the lake/meadow/mtn.range
 - Signal Mountain Lodge - stayed there once
           they have a cafe of sorts
      DO GO UP the road all the way to the TOP of Signal Mountain scenery is MIGHTY FINE.
 - Jenny Lake Lodge - silver/china/crystal -  we just drop in to look sometimes
       food is only for the guests, i THINK.

Between the Moran Junction (just outside the Moran Entrance) and the Lake,
 there are some turnouts on the south side of the road from which the reflections
 in the Snake River of the Tetons is really good.

There is also a favorite spot of ours along this area called OxbowBend; scenery OOOKKK.
 There is a small island south of the lookout and if you wait long enough a moose
  will come along with her baby and munch on the leaves etc.

DO GO all the way to the TOP of Signal Mountain; scenery is MIGHTY FINE; drive CAREFULLY.
  As I recall there are 2 or 3 turn outs toward the top; go to the TOP and then
     stop at the others on your way back down.

If you go west from JacksonHole on Wyoming-22 toward Wilson, then you can turn
 north to Teton Village; this is just a junky ski-resort; but the road continues
 into the Park, although it is NOT paved for a stretch.
 If you are spending more than one night therebouts, suggest that you make inquiry
 at the main MooseJunction Ranger station on day#1 as to whether the unpaved
 stretch is passable at the moment.

There is a one-way segment north of Jenny Lake; scenery AOK. There's a StringLake
 trailhead near one end. As I recall it is a rather level trail in several
 directions.

There is a scenic shuttle boat ride across JennyLake and some hiking available on
 the far side; do NOT miss the last boat back.

As they always say: dress in layers; lay off the synthetics; stay with wool
 and cotton; do take some rainwear and COMFORTABLE wet-weather shoes.

One of my prize souvenirs is a stainless steel copy of the survey marker which
 is at the TOP of Grand Teton; available in the better shops.

You are soooo close to all of this scenery that it CHANGES very quickly as you drive along.
The view from the main Teton Park Road is WOWIEEE. Be sure to drink in the view
 from the Mount Moran Overlook/Turnout; the mtn. was named after the scenic painter Thomas Moran.
In this area some views of the mtn.range will show where there had been some
 mining attempted at one time, and the tailings still stream down the mtn. like
 a tear stain. Believe that there may be a desriptive panel about it if you look
 at every one of them aside of the road.
The view from the US-26-89-191 is NOT bad and provides some interesting foreground.

On at least one clear morning, get into the Park early and watch the sun rise
 shine on the mtn.range.

Once we booked a smooooth still-water (NOT rough/white) raft trip;
 forget where we got the tickets; it starts from a wide place in the road
 and lasts about 1-2 hrs and they bus you back to your car in the starting
 parking lot. Saw some BALD EAGLES in the tree tops.

There are also roads leading east and west from Gros Ventre Junction
 (between JacksonHole and the Airport (BTW it's the only commercial airport
 in a Nat'l Park); to the west leads to a residential development of some
 niiiiiiiiiice and expen$ive homes; to the east leads to the town of Kelly,
 for a while out this road the scenery looking back west is AOK.

----

YELLOWSTONE is TOO...

The most modern accommodations and restaurant are at Grant Village,
 but it is also the furthest from all of the scenery.
Not familiar with "Old Faithful Snow Lodge", but should be OK.
Don't dawddle in the shops, buy something and get on with the scenery!.!.

Seeing the geyser blow is a unique experience, but once it's done its thing, then
 it's pretty much the same next time; see it once and then go see more of the park.
Old Faithful in NOT the most regular, or the biggest, or the most accessible,
 but it IS the best combination of all things which are user friendly.

As you go north to Madison and Norris there will be plenty of other close-by
 geyser basins to see and smell.

Then cross the central road to Canyon Junction; there is a one-way east-bound
 segment at Virginia Cascades which is nicely scenic.

For me the BEST scenery is along the "Grand Canyon of the Yellowstone".
There are paved roads on BOTH sides of the canyon, and you should stop at ALL of the
  parking lots & take ALL of the trails/stairways which lead down toward the bottom.
There is one which goes to the brink of lower falls this is MAGNIFICENT;
 the roar is deafening.
There used to be a LOOOONG set of stairs descending from near UncleTom's Trail
The falls are VERY CLOSE!. The scene UPstream from the falls is NICE and very calm.
Upper falls is usually not worth the effort.

Between Canyon Junction and Fishing Bridge is the Hayden Valley meadows;
 at the RIGHT time of the day you may see herds of buffalo or other wildlife.

The scenery looking west as you drive east from Fishing Bridge to Sylvan Lake
 can be worth the trip; drive out and then drink it in on the way back as
 you drive west.

The scenery to the north thru Mammoth and Roosevelt is not worth your time if
 it is short; stay to the south and the cross-park road.
 But IF you must, then do peek at Mammoth Hot Springs and TowerFalls,
 and if you really need to visit the State of Montana,
 then it's just a wee bit outside the North Entrance toward Gardiner.

If you can manage MORE TIME, then the road out the northeast entrance
 thru CookeCity and Beartooth Pass to RedLodge is BREATHTAKING.!.!