Yes Wallmart close by
There's a King Soopers nearby (not within walking distance, but closer than Walmart). They take coupons/clubcards from anything on the Kroger family (which also gets you $0.03/gal off gas too)
Right up tower road there is a shopping plaza and also a target and Wal-Mart
Uber worked for me. I would also ask the front desk for a grocery shuttle service.
There is a Super Walmart about 3 miles from the hotel.
Thanks! Your answer is awaiting moderation.