Actually on my ride, I also didn't encounter anything open in Valentine. My journal notes from 2001: "Hills went away and land opened up as I got close to Valentine. Population 214. From the looks of it, at least four buildings in town were abandoned cafes and three were abandoned gas stations. Nothing open currently or place to get water. Wonder if all four were open at the same time, or just serially tried different buildings." However, I somehow also remember reading other journals about people being able to fill water (other than my journal note above, I didn't try very hard).