Let me take this slowly....
Quote
waveguide
Hi,
Welcome.
>We are going to Yosemite for the first time - a group of 4 fit grown-ups, interested in scenic hiking.
>Unfortunately we have only 3 days and two nights, Friday-Saturday-Sunday in mid-July (non-RV, just with a tent)
>We have a couple of questions:
>
>1) What would be the nicest hikes in Yosemite? (both loop and non-loop trails)
Where to start? You've got iconic, breathtaking, tiring, flat, rugged, paved, etc.
>2) Are there any nice loop-hikes, doable over one day?
There are short loops. Maybe up Sentinel Dome to Taft Point and back to the parking lot. My favorite places would be more out and back, like Upper Yosemite Fall Trail past the Yosemite Creek bridge to Yosemite Point. Half Dome in a day is the signature day hike in Yosemite, but I personally think that Half Dome is better when made part of a backpacking trip. Part of the way to Half Dome would be up the Mist Trail to Vernal Fall. That is spectacular. If you continue to Nevada Fall, it's about 4 miles one way, and you can take alternate ways back although it's longer. Yosemite Valley to Vernal Fall via the Mist Trail from could be a decent hike by itself.
>3) Is there such thing as not-very-crowded campgrounds in Yosemite? If yes, is it easy to reach nice hike trails from there?
>( I mean, we would not like to spend hours driving just to reach the trails...Actually I am even not sure how drivable is Yosemite...)
In the summer on a weekend you're not going to find any Yosemite campground that meets that description. This is Yosemite. Unless you go way, way from the roads, you're not going to have it all to yourself. However - the areas around Tioga Road aren't quite so crowded, but they can somewhat crowded on the weekends.
>4) Should we book our tent place ahead? What are the chances of finding any ?
Reservations start on the 15th of each month for 4-5 months in advance. I reserved my campsite on March 15th for late July. About 99% of the Yosemite Valley campsite/date combinations were sold out in about 7 minutes. A few scattered single night were available maybe until late morning. That was actually rather unusual. It's typically sold out within 10 minutes after being made available. There were also a few North Pines campsites that were made available (they're in a flood area and probably held back until it was obvious the water level would be fine) a few weeks ago for June/July. They sold out in an afternoon, but that was a different situation than the regular rush.
Your best bet right now inside the park is to find a first-come first-served campground. You might be able to find a place outside the park. There are private campgrounds near Mariposa and Oakhurst. There are Forest Service campgrounds too, but they may be reserved for weekends.
Tuolemne Meadows was mentioned.
http://www.nps.gov/yose/planyourvisit/tmhikes.htmhttp://www.nps.gov/yose/planyourvisit/upload/tmhikes08.pdf