Pro: If there is something you want to see, a weekday holiday could be just the ticket.
Con: Is it legal to not engage in water recreation on the 4th?
Pro: Theaters are air-conditioned.
Con: Hearing a certain person go on about ticket-price inflation.
Pro: Easy to rationalize going to see escapist fare at this time of year.
Con: Will interrupt your eating potato salad.
Pro: Doesn't take all day, leaving plenty of time for other activities.
Con: Getting to agreement on what to see can be a challenge.