[ramaonline]

I had posted this in another thread - just adding it here for reference

for hotels/car rentals try hotwire.com - and access the site thru ebates.com you will get extra discounts and cashback. All hotwire bookings are non-refundable - so cancellations / changes are not allowed but the hotel choices are really good

Also if DC hotels are not available /expensive try booking near BWI (Baltimore)
MTA metro trains run from greenbelt station maryland all the way to Union station DC. Baltimore airfares and hotels are cheap compared to DC.