I hope it's there through April as we have a trip planned to DC.
Based on the updates posted here, I'd guess that there's a good chance the Woodbridge, VA site will be up by then. I would also guess that they won't pull the Bethesda site until Woodbridge is complete. That said, I agree with what one of the other posters said--2 stalls located in one of the top tourist destinations in the country, in a place that also has a fairly high (and growing) number of locally owned Model Ss (Esses?) means that it is going to be packed. If you are going to plan to use it, I'd think about doing so well off-hours.