Barnes is the owner of the Washington nightclubs The Park at 14th and Love.
He's pleased the D.C. City Council has extended last call to nearly dawn.
Washington's bars, restaurants and nightclubs will be allowed to serve booze until 5 a.m. during the inauguration period.
The extended drinking hours will be in effect from January 17-21.
Obama will be inaugurated on the 20th.
Barnes says he expects to rake in as much as $700,000 a night, thanks to the three extra hours of drinking.