I had a one-day trip booked to DC for this weekend (Oct 5/6). My parents have never been to the East Coast and they would not fly to US probably ever again.
We are flying into BWI at ~11AM on Oct 5 and departing BWI ~430PM on Oct 6. My plan was to give my parents a flavor of DC in a day (booked a night at Willard).

Our tickets are nonrefundable. I know there is a thread with all attractions that would remain open. but none of these are first choice attractions for a day trip or attractions that a foreigner thinks about when they associate it to DC.

I am not sure what to do. Should I drive to New York/ Philly instead? I know it is a decently long drive and we might spend time driving and not seeing anything; but I am not sure if staying in DC is worthwhile either.

What do the experienced FTers suggest?

I would like to reiterate that this trip is for my parents, who have never seen any city on the east coast and would probably never visit USA again.

Thanks for the help.