In case you are wondering, this is the timetable set out by the Washington Post for today's inaugural festivities:

4 a.m. -- Metro opens (at rush-hour service and fare levels).
4 a.m. -- Monday extended alcohol service for bars and nightclubs ends; they can remain open 24 hours through Jan. 21.
8 a.m. -- Security gates open for ticketed guests
9 a.m. -- Ceremony gates open.
10 a.m. -- Musical prelude. See the full schedule.
Noon -- Ceremony ends, followed by the inaugural address, luncheon, departure of President Bush and parade.
2 p.m. -- Approximate start time for parade
7 p.m. -- Official balls start
9 p.m. -- Rush-hour Metro service levels end.
2 a.m. -- Metro closes.
4 a.m. -- Tuesday extended alcohol service for bars and nightclubs ends.

In other words, there will be a lot of public transporation provided and hooching allowed, and that's a good combination.