There is a huge interest in urban beekeeping here, with several local courses being oversubscribed. But rather than proactively lobbying to get the law clarified, the DC bee community has chosen to lay low. I'm not sure that strategy is consistent with my own wiring, and I have been quite aggressive in my outreach to get more hives in DC.
You have given them really good advice on two above points. Provide a water source to limit bees chilling out by the kids pool and the laying low-discreet tactic.
Dont ask, Dont tell
Easier to get forgiveness than permission
Only a crime if you get caught
And Mike if I may be so bold...http://www.bushfarms.com/beesafewgoodqueens.htm