It was the 4th of July weekend of a low snow year. There were some snow patches but we had no problem without microspikes.
This route is very very strenuous due to the large elevation gain/loss and the rugged terrain. Allow you enough time. I recommend that you spend more than 5 days to do this loop. 4 days were quite tight for us.
Day 1: Parked my car at the South Lake trailhead - Took the Bishop Creek Shuttle to North Lake - Lamarck Lake - half mile before Lamarck Col (6 mile, 3500 ft)
Day 2: Lamarck Col - Evolution Lake - half mile before Wanda Lake (8 mile, 1300 ft)
Day 3: Wanda Lake - Muir Pass - Le Conte Canyon (12 mile, 2000 ft)
Day 4: Dusy Basin - Bishop Pass - South Lake (10 mile, 2000 ft)
Here is the shuttle information.
The shuttle is twice a day and $5 per person. No reservation is required. Have the exact fare as the drivers don't carry change. The shuttle stops 2 miles before North lake as the road is steep and narrow. If you use the shuttle service, you will need to hike up 2 miles on the gravel road to the trailhead but it's not too bad.
Here is the map view of my channel. You can browse my videos by their locations.
Overnight backpacking requires the wilderness permit. The name of the trailhead is Lamarck Lakes.