Walmart list
No park Walmarts, full list: http://www.walmartatlas.com/wp-content/uploads/2015/01/no-park-walmarts.pdf
Forum Discussion
The list refers to 'overnights'. The above link represents only approximately 20% of all the Walmarts. Meaning approx. 80% do allow overnights. According to the Walmartatlas.com.
