I’m going back to buying DVDs.

I’m not even seeing a way to buy tickets now.

You might try the Evidence Explained forums answered regularly by Elizabeth Shown Mills. She is a specialist in genealogical citation but she is based in Chicago Manual of Style. https://www.evidenceexplained.com/forums/citation-issues

Or you could just take your best stab at a citation and wait for some eagle-eyed all knowing person to correct you 😄