To chime in as a local Norther VA'er as well:
The Dulles Air & Space Museum isn't a bad drive from DC... should take 30 minutes or so on a Sunday. If the primary day is Saturday and will have activity scheduled in and around DC, then I think the Air & Space museum makes a nice secondary location for the next day.
Considerations:
- Nice drive from DC without being TOO far. Very easy to get to. It will cost you about $3 in tolls, however.
- Lots of parking (albeit expensive at $14 per person)
- Great attraction... the stuff inside is likely to appeal to most Tesla owners, IMO (I mean who doesn't want a pic of the SR-71 inside?? Or the Space Shuttle...)
- The route from DC to Dulles takes you right past the Tyson's mall, which has a Tesla Gallery inside it. They have 6 parking stalls there with 2 HWPC's and a 14-50 (which I just noticed the other day). Might be a good idea to coordinate with management if the group decides to stop there for a visit to the store...
- Decent places to eat in that area (Recommendation: Clyde's is 15 minutes form there and generally can accommodate large groups. Upper-mid-tier dining/price point. Multiple bars.
)
- Not a lot of charging options out that way.
- Reachable to potentially 4 Superchargers from there: Glen Allen, VA (108 miles); Newark, DE (120 miles). Hagerstown, MD, and Somerset PA are rumored to be locations, and if open by then, they are 65 and 149 miles away, respectively.
Sounds like a cool weekend... unfortunately rather booked so will probably have to miss the majority of it. I might be able to make Sunday afternoon or evening. I also live about 10 mins from the museum, and might be able to make my HPWC (@ 40A currently) available if somebody's in a pinch if I'm home.