Scott, there's always the MD Renn Fest or VA Renn Fest. Both are friendly to armor, and both have hotels nearby. VA is in late May / early June, and MD starts in August and goes to late October. VA will allow peace-tied weapons; MD won't. However, MD is much bigger and much more to see and do. The best day is closing day of MD Renn Fest, because everyone heads to the joust field at 2pm for a group picture of everyone in armor - whether part of the Order or not. This was last year:
Sir William was absent from this specific picture, but was there for a bit, I just don't have a photo of him with the group handy. Of the 11 people pictured, 5 of us are from the Order.