Fans heading to Hong Kong’s Kai Tak Stadium for British rock band Coldplay’s coming concerts will be able to bring in bottles, unlike previous practices, but banned from carrying signs, the organiser has said.

Show organiser Live Nation announced that those attending the band’s four-concert run, which will kick off on Tuesday, would be allowed to have plastic or silicone reusable bottles, or cups inside, but they must be empty with a maximum capacity of 600ml.

Disposable plastic, glass or thermal bottles, as well as those bigger than 600ml, are still prohibited.

The announcement made on Sunday overturns the venue’s previous ban on all bottles and cups.

During earlier events and trial runs, many people had to store their bottles on unstaffed racks placed outside the venue, while those who were unaware of the blanket ban held up the queues at the security checks.

Greenpeace also criticised Kai Tak Sports Park after the three-day Hong Kong Sevens rugby tournament generated about 860,000 disposable items because of the ban.