Devils advocate here, since I've only ever stayed on-site, but aren't most offsite (decent) hotels the same price as on-site in the value season? I really don't think $82/night is that unreasonable.
for us-- we have 4 rooms at pop-- which costs about 2400. for the room only. I am sure we could rent a 3 bedroom condo for a lot cheaper then that.
If it was only the two of us-- yes staying on site would be worth it-- even without the dining.