I caught this again earlier today, and it was a full theater. I even went at 10AM to beat the crowds, but nope, it was sold out. I had to wait for the 11AM show. It was a packed house.
A few in the audience even gasped at the "big reveal"
I'm relieved it's done so well in the second week. The competition looked pretty big, but luckily Hangover 3 was a flop (relatively to 2).
Anyone worrying about a sequel in 2016, don't. Paramount will have another movie ready for the big anniversary, just as they did in 1991. Will the budget be 190+? Probably not. This is always been a franchise which had the ability to do more with less.