I know there was another Blondie movie called "Blondie Takes A Vacation". It was pretty weird watching them about to do just that, but then it turned into something completely different. This movie features Dagwood accidentally resigning so while trying to get his job back, Blondie ends up getting his job instead! There's actually a pretty big subplot about how Dagwood accidentally holds a woman in a boat. It turns out this is mostly pointless because he kisses her later anyway. It was interesting to be introduced to all of these movies through Leonard Maltin's movie guide.
Of course, now it's in a separate guide. They actually got a lot done on the first sequel. They even make jokes about Dagwood running over the mailman. That's just the second movie out of twenty-seven! The funniest part was easily when Blondie got mad and then it showed stock footage of random stuff blowing up! I thought their neighbor was named Herb, but here he's called Marvin. Well, they've probably changed a lot in the seventy years since this movie! ***