The cynic in me says bars and restaurants will have a special NYE service with prices 13% higher than last year.
But I think a bigger factor is NYE was Sunday last year, so it was the middle day of a long weekend that most people have off work.
This year it's on Tuesday which might cut down on the number of people wanting to go out as it is a regular business day, well not really "regular," but most people will have had to work during the day at some point, and that will leave people tired and more willing to stay at home than go out, even if Wednesday is a holiday.