Every crackerbarrel has RV and Bus parking. At least 5 spaces. And it's always ok to park your RV overnight.
Yes, outback
Yes yes
Yes outside
Yes there is available parking in back for buses at some restaurants
Usually when a bus arrives they are notified ahead they will let you know where to park. Or when you arrive seek out the restaurants manager. Depending on the stores location each parking spot could be different.
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