California

Idyllwild

 * Verizon (71.11 download, 15.21 upload)
 * AT&T ?
 * T-Mobile (23.87 download, 5.70 upload).
 * Sprint ?
 * WiFi ?
 * Sewer Yes
 * 30 amp Yes
 * 50 amp ?
 * Packages/Mail ?

Lake Minden

 * Verizon (24.68 download, 25.57 upload),
 * AT&T July 2017 (23.32 download 3.46 upload)
 * T-Mobile ?
 * Sprint ?
 * WiFi ?
 * Sewer Some
 * 30 amp Yes
 * 50 amp ?
 * Packages accepted for $5 each.

Lake Of The Springs

 * Verizon works in section D and I
 * AT&T works in D and I sections. Section D (34.28 download, 2.89 upload) site 135 w/Antenna (2.53 download, 2.98 upload)
 * T-Mobile ?
 * Sprint ?
 * WiFi ?
 * A few sewer sites near the bath houses.
 * 30 amp Yes
 * 50 amp ?
 * Packages/Mail ?

Morgan Hill

 * Verizon cell reception good.
 * AT&T cell reception good.
 * T-Mobile ?
 * Sprint ?
 * WiFi ?
 * Sewer No
 * 30 amp Yes
 * 50 amp ?
 * Packages/Mail ?

Oakzanita

 * Verizon cell reception good; (0.59 download, 0.57 upload)
 * AT&T ?
 * T-Mobile ?
 * Sprint ?
 * WiFi ?
 * Sewer ?
 * 30 amp ?
 * 50 amp ?
 * Packages/Mail ?

Pio Pico

 * Verizon Bad (nothing in section H, even with antenna and booster)
 * AT&T bad in H section, good in B section
 * T-Mobile bad (Usable (not fast) service with a directional antenna about 20' off the ground, and a booster in section H near bathrooms)
 * Sprint ?
 * WiFi Yes, paid service. Works okay. Able to stream, but seems to drop out on occasion, especially in the evening.
 * Sewer Some
 * 30 amp Yes
 * 50 amp Some. Waiting list when busy.
 * Mail/packages No USPS. $2 per package fee for UPS/FedEx. Dulzura post office is 5 min away and does general delivery.

Palm Springs

 * Verizon (50.01 download, 13.39 upload) much slower during the busy season (Winter).
 * AT&T, (44.92 download, 33.06 upload) much slower during the busy season (Winter).
 * T-Mobile (69.8 download, 41.7 upload, 35 MS ping)
 * Sprint is fair (3.6 download, 4.8 upload).
 * Paid WiFi is available.
 * Sewer Yes
 * 30 amp Yes
 * 50 amp Yes
 * Mail via general delivery to Palm Desert PO. USPS packages $2 fee. UPS and FedEx delivery to site, must include site # in address. Amazon Lockers nearby.

Ponderosa

 * Verizon ​(19.2 down, 2.9 up)
 * AT&T (no signal on Mobley in lower section).
 * T-Mobile ?
 * Sprint ?
 * WiFi ?
 * Sewer ?
 * 30 amp ?
 * 50 amp ?
 * Packages/Mail ?

Rancho Oso
Very narrow roads getting into park.
 * Verizon Nope
 * AT&T Nope
 * T-Mobile Nope
 * Sprint Nope
 * WiFi ?
 * Sewer Yes
 * 30 amp Yes
 * 50 amp ?
 * Packages/Mail ?

Russian River

 * Verizon (5.06 upload, 4.52 download)
 * AT&T (20.63 upload, 3.17 download)
 * T-Mobile Poor signal in section B, but with a booster or antenna would probably be okay.
 * Sprint ?
 * WiFi No
 * Sewer No, free dump station, Honey Wagon available twice a week for $25.
 * 30 amp Yes
 * 50 amp No
 * Packages/Mail USPS General Delivery in Cloverdale

San Benito

 * Verizon good (9.55 download, 2.91 upload)
 * AT&T Nope
 * T-Mobile Nope
 * Sprint Nope
 * WiFi ?
 * Sewer Yes
 * 30 amp Yes
 * 50 amp Yes
 * Packages/Mail Yes

Snowflower

 * Verizon (4.28 download, 7.39 upload)
 * AT&T Nope
 * T-Mobile Nope
 * Sprint Nope
 * WiFi ?
 * Sewer ?
 * 30 amp ?
 * 50 amp ?
 * Packages/Mail ?

Soledad Canyon
GPS may want to route you the back way via Bootlegger Canyon Rd. Do not take that route. Entrance off Crown Valley Rd.
 * Verizon very good in section N and east end of section K. (50 Mbps down, 6.20 Mbps up)
 * AT&T very good in section N and east end of section K. (33.46 Mbps down, 12.11 Mbps down)
 * T-Mobile ?
 * Sprint ?
 * WiFi ?
 * Sewer Yes
 * 30 amp Yes
 * 50 amp ?
 * Packages accepted.

Wilderness Lakes

 * Verizon is very good (middle of the canal) (26.47 download, 5.23 upload)
 * AT&T not fabulous, but it works. (middle of the canal) (6.60 download, 7.88 upload)
 * T-Mobile Good (middle of the canal) (7.38 download, 12.74 upload)
 * Sprint ?
 * WiFi Yes, paid service (www.streamwifi.global)
 * Sewer Yes, most sites
 * 30 amp Yes
 * 50 amp Yes, many sites
 * Mail/packages Yes, $2 per item. Can only pick up 10am-11am and 4pm-5pm. Photo ID required.

Yosemite Lakes

 * Verizon No. Works in Yosemite Valley.
 * AT&T No
 * T-Mobile No
 * Sprint No
 * Free WiFi at lodge, and paid WiFi throughout park ($15 per week).
 * Sewer ?
 * 30 amp ?
 * 50 amp ?
 * Packages/Mail ?