i always bring outside food
must buy their food a bit too just to cover up

tips for bringing outside food
1. buy something from cinema the mineral water bottle of popcorn to cover up your other food. they'll probably not check you if they see you buy their food. its wise to bring the popcorn box back with you for your next cinema watch so you can stuff your food inside the popcorn box
2. come to the checking door quite late, especially if the cinema have advertisement, give like 10 minutes late, its still on advertisement. run to the door show in a hurry face and go straight in
3. wear multiple jacket and stuff it inside inner jacket or wear jacket with inside pocket and zip it, those checker are not like airport security, your food will survive