I got to see and hike the fall 2 out 5 times, because is too crowded and no parking.. Traffic was horrible.
Summer time, need to reserve entry pass the from Bridal Veil Parking lot to Horsetail Fall parking for $2 online. Only could entry the hour reserve and could stay long as you want. 1 time entry only. There is shuttle bus from falls to falls. Reserve entry pass start at 9 am, before 9 is could entry without a pass. Flow of falls is more than in winter. Leaves is very green.
Winter, you don't need to reserve entry and not crowded as other times in the morning. Be careful on the trail, is icy. I actually fall on the end of bridge, but lucky I have thick jacket on so minor injury. Very green and leave in fall color. Very pretty.
Hike is very easy and 0.2 mile one way to bridge. Pavement trail and stroller friendly.
Bathroom by gift shop and restaurant
Restaurant and gift shop open at 9 am
Coffee stand opening early but I can't remember what time.