Pumice flat was absolutely gorgeous! Very quiet campground with clean restrooms and water. The River runs right through the campground with several access points for fishing. I had No cell service in the Reds meadow valley. Tons of trails in the area such as Rainbow falls and the Devils postpile which is a National Monument. You can see them both on a 4 mile loop which also stops in Reds Meadow that will add .7 to your hike. The pct also runs through Reds Meadow if you’d like to hike a short section on that. Reds Meadow has a cafe and general store with WiFi and all the amenities. You’ll need to purchase and adventure pass on your way into Reds Meadow valley for 10$ either at the guard station on your way into the park or from the Mammoth mountain adventure center. Please remember to properly store food in provided bear boxes while camping for this is very active bear country.