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. Secretary for Security Chris Tang Ping-keung previously said the ban on bottles was for security reasons and was in line with other major stadiums around the world. Fans are also banned from bringing signs and banners, with some concerned it would affect their experience. Coldplay’s concerts usually include a “songbook” segment where fans can request their favourite songs, usually by holding up signs to draw the attention of the band members. Professional cameras, GoPro cameras, laptops and telescopes are banned too. Children under the age of 12 or 140cm in height are restricted from entering the standing pen, while those aged below three are not allowed into the concert, according to the organiser. Coldplay will play at Kai Tak Stadium on April 8, 9, 11 and 12 as part of its “Music of the Spheres” world tour. The run will be among the first wave of concerts and events to be held at the 50,000-seat stadium at the new Kai Tak Sports Park. Ahead of the concert, a pop-up stall opened on Sunday at Airside Mall with exclusive items and immersive experiences, drawing a long line of fans. The stall, which will be open until April 27, sells Coldplay’s CDs and vinyl records, as well as tour T-shirts, hoodies, headwear, jewellery, bags, tour programmes and concert posters, among others. To cope with the high volume of concertgoers, transport authorities said they have arranged 11 special bus services between Sung Wong Toi Road and major districts across the city. These include two bus routes to the Lok Ma Chau-San Tin public transport interchange and the local checkpoint on the Hong Kong-Zhuhai-Macau Bridge. The MTR Corporation said it would also ramp up its rail services. The service frequency is set to be increased along the Tuen Ma and East Rail queues after each concert, with spare trains put on standby to accommodate any extra demand. Kai Tak Sports Park will also arrange cross-boundary coach services at the stadium’s ground floor pickup and drop-off area, which can be reached by an escalator outside gate H on the second floor. Mainland concertgoers can travel on private coach services which bring them directly to cities such as Shenzhen, Guangzhou and Zhongshan. Checks by the Post found that the tickets for Eternal East bus services departing to Shenzhen North station at 10.30pm on concert dates were running low, with one bus already sold out.