The Boudin Festival is extremely amazing! Normally one night is free and the other nights are $5 for entry. There's good music constantly. There's a Boudin eating contest, which is hilarious.
They have different fair-style rides and games. They are normally adding different types of rides yearly or switching. There are the normal favorites, as well. This past year they recently added a sort of escape room called Hot Seat, which was really fun.
And of course, there are multiple Boudin venues there. Everything from regular boudin, boudin balls, boudin burgers to boudin egg rolls.
They do serve alcohol. It's also very family friendly.