I don't go very often but when we do we take our own lollies & drink . The ticket in cost enough without paying crazy prices for snacks as well.
I did treat myself when I was in Sydney a few months ago tho, wanted to see Julia Roberts Movie Eat Pray Love ? was only on in the posh theatre where you have recliner chairs ! Had the theatre to myself & paid for wine & a snack to be brought into me !!!
Was really diferent yet nice for a change.