A majority of Americans are hitting the road this summer. Among those planning to take a vacation, more than seven in ten say they are travelling here in the United States. While a plurality of vacationers are seeking rest and relaxation, more than one in four expects to visit with family and friends, and about one in three have adventure or cultural experiences on their itinerary. And when it comes to the ideal length of a summer vacation, a plurality of Americans say one week is ideal.