We stayed in mid-October and while chilly, we had an amazing time. We chose the Quarry Bay Area, which is located on the far side of the dam from the rest of the park. It's about a 5-6 minute drive back to the main park area which is were you'll need to pay fees, but in our opinion, very much worth the drive for the seclusion. The spaces on this side of the park are very spread out and create a lot of privacy. 6 of the sites in this area (401-406) have 'mushroom' shelters that provided a nice area to prep food and escape a brief rain shower. Our location (site 405) also provided direct access to the Cat Claw trail head, was near the end of a dead-end road, and had great views of the lake framed in by a very well kept grassy area and mature trees. Cell service on Verizon was consistent, allowing basic web browsing and social media, but loading video was spotty at best. T-mobile service was a step down from Verizon and varied between 1 bar and no-service based on where you sat at the site. Not a big deal for us as we were there largely to disconnect, but if you need to entertain kids, make sure you download content before leaving home! We had a wonderful time and look forward to returning again!