there's nothing in particular near BWI except arundel mills, with one of those medieval times places...so if jousting works for your conversation, then great, otherwise, you'll have to drive a bit.
I did fine with a 5.6 28-300 for my kids' sports outdoors. The length (plus the crop factor) got me a ton of shots that I couldn't have gotten otherwise.
Worked the database table at our church's annual auction, This year we brought in about $8000 less than in year's past, for a 40% drop. The economy is really making a difference.