So it has proved, with Guardians of the Galaxy Vol 2 opening in the UK with £13.1m (£17.8m including bank holiday Monday).
There should be satisfaction and relief at Altitude for Lady Macbeth’s debut of £153,000 (£191,000 including previews, £253,000 including bank holiday Monday).
Thanks overwhelmingly to Chris Pratt and his galaxy-guarding pals, box office overall is 89% up on the previous session.
The erotic drama reached the milestone on Sunday; the tally including the Monday holiday is now £1.04m.