DFM - why are you here braging about sneaking into movie theatres, and then complaining about high prices on everything. You want to know why things keep getting expensive? Let me water it down for ya ok?
First of all the movie has a set rate on movie tickets and concessions. OK so a bunch of kids start sneaking into other movies after they buy tickets to see one show and like you said sneak to another after seeing the first purchased show. Now the movie theatre is losing money on an unpaid seat in a cinema that cant be filled by an otherwise paying consumer. Once the room is full, they go to the ticket office and inform them, it is sold out and filled to capacity. So now the theatre loses more money because now they cannot sell more tickets. In all honesty, the ushers are not going to check every persons ticket once they are seated, they often see that the person has a ticket in hand and therefore must have paid for the show. Its also not practical to check each persons tickets during the movie. Then NO ONE gets to enjoy the movie.
So now in order for the theatre to cover the loss, they must raise their prices, and then the cycle continues. So you see that stealing really costs everyone with higher prices across the board. The theatre does not like to raise costs for other than inflation.
So do exactly as your family doesnt, pay for the show you see and leave, dont sneak into other shows, dont hijack threads, and for gods sake please get some counseling!