Highly recommended to visit this UNESCO WH site! Just be prepared:- foreigners [and Chinese people not from Xiamen] must take the ferry from the new ”port”. But evenings [after 18:50 in summer] you can take the ferry from the old terminal (just opposite from Gulangyu Sanqiu port).- the ferry costs 35 rmb [it includes the return trip, so keep the ticket!]- highly recommended to prebook ticket [especially for weekend and for morning ferries]. You can do it with Wechat or Alipay using your passport, then collect the ticket at the port. Since Chinese people go with ID card, so no long lines at the port.- Be prepared, Gulangyu gets very very crowded, i recommend take evening ferry, stay there for the night. And early morning visit the "must" places - especially the Sunshine Rock, to avoid the tourist groups that come after 12:00.