Off topic but relatively nearby:
Strasburg RR has a full slate of events, especially on Saturday:
https://www.strasburgrailroad.com/ticket-options
RRMOP is across the street, of course.
In case any of you want a round of golf while you’re there, Group Golfer’s special buy today is near Gettysburg:
https://www.groupgolfer.com/deals.php
With the other area tourist spots, factory tours etc. open this year, there shouldn’t be a problem finding something for those who don’t do the show but might appreciate the trip. If you plan the outdoor activities, you might want to keep an eye on the weather. Right now, it looks showery but not likely violent.