Other mistake: Al, Peg, and the kids go to the beach. Steve and Marcy are sitting not too far away from them, yet they never interact with each other. They had to see each other they just act like they don't notice each other.
Married... with Children (1987)
1 mistake in Life's a Beach
Starring: Christina Applegate, Katey Sagal, Ed O'Neill, Amanda Bearse
Genres: Comedy
Al Bundy: When I said I needed money for the meter you said you didn't have a dime.
Peg Bundy: No, we said we didn't give a damn.
Trivia: Ed O'Neill is only actor to appear in all 260 episodes of the show.
Question: Would Marcy even be allowed to marry Jefferson considering that she and Steve never actually got divorced?
Answer: It's implied that Steve filed for divorce since in s04e16, "You Gotta Know When to Hold 'Em", Marcy says that Steve is suing for alimony. Alimony is something that has to be requested when filing for divorce. Although the show doesn't spend time on the actual legal proceedings of their divorce.
Bishop73