High Sierra Topix

Looking to gather some ideas for places with 1-1.5 hours of great Sierra locations that can be used as a telecommute base, while I car camp or backpack, or just arrive a day early to secure a hard to get permit.

Here is my problem - I don't have many vacation days from work, I live in the Bay Area, a weekend is not enough time to leave the bay area, enjoy the Sierra as much as I would like, and then return to the Bay Area.

Do you have any ideas or recommendations?

1) Have good wifi and cell service
2) Don't mind you hanging around and working (library, coffee shop, other)
3) Are within 1 hour of a great campground or wilderness area
4) Itinerary that allows for work and then enjoying the wilderness in the evening?

Public libraries in Bridgeport, Bishop, Sonora...

Huntington Lake cabins.

Anywhere you go, if you get one of the satellite wifi devices.

Many private RV parks and resorts have wifi.

We use a Verizon air card, since public wifi is not secure. Of course, you need cell coverage with adequate signal strength. With weak signal you need a cell phone booster combined with an air card, and even then is somewhat slow.
We do our online banking and private business on the air card, and public wifi for general web surfing.

Was just at Azalea campground in SEKI (Grants Grove) and had good cell service with Verizon, but those with ATT had nothing. there is WIFI at the visitor center also.