As with most of Rodgers & Hammerstein musicals, they have their target audience and anyone who falls either side of it probably won't enjoy them, there are some exceptions to the rule, but Oklahoma is a particularly trying film is you're not a fan of the songwriters' other works.
This set-bound adaptation of the stage play sees a group of ranch hands vie for the attentions of a beautiful woman, all through the medium of song & dance.
Nowhere near as memorable as the songwriters other works, with only a few songs which people will remember.
Of course, if you don't like the old style musical you won't enjoy this at all. (I didn't enjoy this at all).