We were in Campground E and we had no TMOBILE cell service. There was a Pay Phone (which we rarely see in campgrounds) at Campground E toilet/shower facility. Only free WiFi is at camp store by the pool. We purchased WiFi from park vendor Viasat $20 unlimited for 3 days for one device. It was very slow.

We have Verizon and there was no service at our campground. You had to go up the hill to the overlook to get service.