pre-booked          
adjective (also prebooked) uk/ˌpriːˈbʊkt/ us/ˌpriːˈbʊkt/
 预订的
arranged to happen, be done, or be used at a particular time in the future
  The restaurant opens four times a week for pre-booked dinners only.
 Our prebooked taxi arrived at 6.30 in the morning. 我们预订的出租车早上 6 点 30 分到达。 
 Their clubhouse was prebooked for a wedding reception.
  提前登记的
A pre-booked person or group has arranged to have or do something at a particular time in the future.
  Pre-booked groups can visit the museum at discount prices.
 40,000 people were prebooked for the vaccine. 有40,000人预先登记了注射疫苗。 
 - More examples
 - Admission is by pre-booked ticket only.
 - You can only visit the recycling centre if you have a pre-booked slot.
 - All pre-booked clients will be contacted.
 - Several tables were empty awaiting the arrival of prebooked diners.