You earn activity points for any activity that is more than your usual activity. Yesterday we went out to eat for breakfast and my breakfast points were 8 points, which is not bad. Afterward, we were at the mall walking around leisurely for 1 1/2 hours. If you plug this into the Weight Watchers activity calculator then your earn 8 activity points, which you can use towards your daily food if you want to.
The activity calculator can calculate different types of walking and gives you tips to figuring it out what level of activity you were doing.