Be aware that day trip visitors now need reservations to enter the park. If you have in-park reservations for camping/Half Dome/Tent cabins etc. then you do not need a separate entrance reservation.
What is different about visiting Hetch Hetchy?
The Hetch Hetchy area is open with day-use reservations not required. However, access is limited when parking fills. Hetch Hetchy Road is only be open from 8 am to 5 pm. Day visitors must exit the area prior to 5 pm.
Did a day trip there several years ago.
The trail along the lake is very nice.
You cross Wapama Falls on a bridge.
This is very thrilling as the water is very close to the walkway.
We were there mid spring several bears along the trail
looking for "handouts".
Have a great trip.
Pictures please.
Frank