Any tips for taking the twins down?

I'm thinking weekend of Jan 14th. Figure it's the week before the inauguation so it won't be as bad... maybe?

How do I get the twins a tour of the white house? I heard they don't allow strollers so I'll need to baby wear.

Will there be a lot of walking from parking to the white house? Lots of waiting? DH has trouble walking long distances so it might be tough for him.