The most common and most likely answer to this crossword clue is the 4 plus 5 letter word DUDE RANCH
I've seen this crossword clue in The Daily Telegraph
D
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A
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More clues leading to the result DUDE RANCH
Buddy explains!

The straight part
We know that "at which a Wild West experience may be enjoyed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case at which a wild west experience may be enjoyed = dude ranch.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.