Audiences are going nuts for Warner Bros/Village Roadshow’s King Arthur: Legend Of The Sword.

It was announced this week that there will be free previews of the movie April 27 at select theaters at 7 PM local time, a promotion called “King for a Day.” AMC Theatres has maxed out on RSVPs from Danbury, CT, to Burbank, and now the chain is adding 50 venues for the Guy Ritchie film to meet audience demand. This brings King Arthur‘s advance preview count at AMC to 200 theaters.

The promotion allows guests to visit AMCKingForADay.com to find their participating AMC and reserve two tickets to the film. Attendees also will receive a limited-edition hat from the film and a special poster created by “Obey” artist Shepard Fairey’s Studio Number One team. Several locations reached maximum capacity in less than 24 hours. AMC held a similar type of advance screening back in November for Illumination/Universal’s Sing, whereby moviegoers were able to see the movie weeks in advance of its December release.

Starring Charlie Hunnam, King Arthur: Legend Of The Sword opens May 12.