Yellowstone NP is my favorite NP.
The thing to remember is it is HUGE and it takes several days to really see it and not have to rush. We like to stay in the park, as it is so big and that eliminates travel time to and fro each day. But staying in the park means booking early- up to a year in advance if you want to stay in Old Faithful or another popular hotel on property.
During the busy season, traveling the roads in the park can take alot of time as animal sightings cause traffic jams.
I'm notsaying that to scare you but to let you know doing things takes more time than you'd think.
Basically the road through Yellowstone is a big figure eight with side roads out all four directions.
Usually we'll take one day and spend at the upper right side of the park- the Tower-Roosevelt/Lamar Valley area. This is were you are more likely to see grizzles and wolves. Lots of people ( including us) park along the road in the Lamar valley in the early morning/ late evening with spotting scopes or binoculars to catch a glimpse of wild animals. We like to ride horses in the Tower- Roosevelt area.
One another day we will typically spend a day in the Norris Geyser basin, hiking short trails to some of the geysers we like to see, then head north to Mammoth Hot springs to see the sheep on the way at the sheepeater cliffs and pick up a snack/lunch at the Mammoth area.
We might spend a day driving to Yellowstone Lake/ West Thumb and then head up to
Canyon Village and see Artist Point Waterfalls/Grand Canyon of the Yellowstone. We usually get a picnic lunch for that day to take with us.
We will also spend a day driving and stopping along the road from the upper geyser basin near Old Faithful, to Madison.
There are alot of geyser areas along the way on this drive.
Alot of planning has to do with what your priorities are:
seeing wild animals/ hiking/ seeing geothermal features/ lake activites.
Each area has it's own unique features and we love them all
