It's thoroughly enjoyable, the fact that Lady Belcastle kept impeccable hair and makeup during the three- or four-day ordeal trekking through the wilds of Wyoming.
When Maverick is ordering the Belcastles to follow his directions, Albert is shown reacting to his own off-camera voice.
Maverick and the Belcastles are supposed to be in Wyoming, yet they are clearly among Joshua Trees, a plant found only in California, Nevada, Arizona, and Utah.
Maverick and the Belcastles are supposed to be in Wyoming, yet Maverick cuts into a barrel cactus to get the water inside of it. The barrel cactus is a plant found in the American Southwest.