Re: 7 trolley dollies, one packet of crisps!
Nope, just checked the A321 safety manual. The Jar-ops legal minimum on the A321 is 5, not 4. Odd I know, sort of throws the entire crew member per pair of doors out the window, but it is true. Apparently it is one crew member per pair of doors, plus a 'direct view' crew member to motivate passengers forward to doors 3 in the event of an emergency. (CAA website)