We had enough bandwidth to stream video. There may be different experiences depending on site location.

Spotty coverage.

It is virtually nonexistent. You can get service on the beach in the park and in town, but not at the campground.

Don't rely upon it.

I had 1bar sometimes. Most of the time it was non existent. But then out of the blue a text would come in.

As of a year ago, we had zero reception for AT&T

Atrocious. In the park itself, at your campsite, you will get indications from your devices that ATT is available on 4G with a bar or two, but calls will not connect and the Internet doesn't exist. You cannot send or receive messages I'm not sure what the phone is seeing that causes it to think it has service when there is none, but it sure does give you a false sense of connectivity. As others have shared, the moment you get out on the beach, like near the remains of the Peter Irondale, you have great AT