I'm a big fan of cabins. Otherwise guys tend to stay in different places and it's hard to coordinate schedules. Besides, a cabin provides kind'a of party atmosphere where everybody has a central meeting place. And a BBQ and other food is readily available and affordable.
A few other considerations:
a) Despite the cell reception problem, cabins do have internet and often a land line phone in case you need to call your gf, s.o. or.... mom.
b) Besides, cell service is a problem almost everywhere. You'll have it one minute then not the next... especially at 180mph.
c) Fontana does have excellent campsites right at the foot of the dam. And "dirt" cheap... haha. They even allow 2 tents per campsight and have showers.
If you didn't want to spend $200+ on motels or sharing a cabin (3 nts, right?) camping is the way to go. About $20/person for all 3 days.
The rooms in Lodge itself run about $150/nt. now. Way overpriced. But there were years when we had 40+ guys stay there.
Here's camping info:
https://www.fontanavillage.com/lodging/the-campground/
The view from above, with the campsite at the extreme lower right.
