I took ds, age 3.4 to the movies (Racing Stripes)and he was a nightmare. Running up the aisles, hiding under the seats etc and I got very worked up about it. 3 months later decided to have another bash and we went to the Children's club that the cinema run over the summer holiday. This time it was Robots, and he was great. Needed about 5 trips to the toilet, but cinema very quiet so going in and out not a problem. Also, it was only £2 each child ( dd came too) and parents got in for free- total cost £4 plus popcorn. If it had been a disaster not wasted much as opposed to about 15 for a normal trip. Been back since (it runs on Sat/Sun throughout the year) and almost enjoyable!
Is there anything like this near you to try?