What you need to know before your vacation in Yosemite? Despite its enormous size, most of the tourist activity takes place within the 8-square-mile area of Yosemite Valley. Here you'll find the park's most famous landmarks – Half Dome and El Capitan – as well as excellent hiking trails through the natural monuments. You can book the Yosemite bus tour from San Francisco with discount price on the website now.

It's huge

The park takes up a whopping 750,000 acres. Many visitors often don't realize how long it can take to get from point A to B in the park. From certain entrances, and especially from Yosemite Valley to Tuolumne Meadows, expect about an hour or more in the car.

You'll probably stay in Yosemite Valley

Yosemite Valley is where most of the park's top attractions (think Half Dome, El Capitan, Glacier Point and the Mist Trail), accommodations and amenities are.

Yosemite bus tour from San Francisco

Summer is really busy

All seasonal closures lift during summer. As such, the park becomes packed. Expect traffic jams, crowded trails and campsites and hotels booked months in advance. If you don't want to deal with this chaos, try visiting late spring or early fall.

Start your day early

If you do visit during the summer, park officials say you can beat the crowds in the trails and on the road if you hit attractions before 10 a.m.

Bring warm clothes

Even during the summer, nighttime temps can get downright chilly, plunging into the low 50s and high 40s. Bring warm clothes or a coat even if you're visiting during August.