A Big Hand for the Little Lady (1966)

Once a year, the richest men in the territory get together for a marathon poker game in the back room of a saloon/hotel. On that same day, a family is forced to stop for wagon repairs and take a room for the night, but it's clear that the husband 1) is dying to get into the game and 2) shouldn't be risking the family's savings to these high rollers.

It does take a while to pick up steam, but it's a lot of fun once it gets rolling.

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