Is there an area where someone can get dropped off? My dad is driving us there but he doesn't want to go in and we were wondering if there's an option for that.

Yes. When you get to parking lot follow signs for RV Park & Drop Off.

Ypu can be dropped off at the RV park. It is near the entrance.

Im not sure if they allow walk ins.

I don't think there is but you can just have him drop you off in the parking lot or around the park im sure.