[bombcar]

Opening night most if not all of the ticket price goes to the studio anyway, but it's the ticket price not the per-showing price - so if they have a theater empty anyway (and I've not seen a blockbuster fill all theaters at a given multiplex for decades, and even then it was only small 4plex) they might as well make you a deal.

[cjkaminski]

The split on ticket price between studio and theater operators is usually around 50% for the opening period. The window scales towards the theater's benefit over time, usually going to about 75% in favor of the operator.

That said, you're 100% right about making an offer. Most theaters have underutilized screening rooms, and managers have the ability to rent for private events. I've done this a few times. The rental rate tends to be about 10-15x the price of a single ticket (in my experience).