6am? Where do you live?

Some friends who live in central London are booked on a forthcoming 06.10 FR STN-SUF. The Stansted Express doesn't run during the night so if you don't want to pay for a taxi this means taking the bus from Victoria or wherever at something like 03.00. Faced with this unappealing prospect they were considering
(a) getting the last Express to STN, arriving there at something like 01.00, then watching a couple of DVDs on the laptop, or
(b) going clubbing until 03.00 in London, bus to STN, then sleeping it off on the plane.