Yes, power boxes have the standard 110v wall plug in, a 30 amp plugin and a 50 amp plugin. Not all sites have power hookups.

Loop b,c,d

there were 3 RVs in our group and 1 had to use a 50 to amp adapter.

We didn’t need power so I can’t answer the question. Don’t know the answer.

I honestly don’t remember. I think so but can’t say for sure.