Of course not, you can cancel it later, but not cancel it now.
Cannot, as there is a service charge for ticket cancellation after placing an order. If you can’t confirm the date, it’s safer to buy tickets at the on-site ticket office.
Cannot, can arrive early, within half an hour later is fine, beyond that it will be invalid.
Cannot Can cancel and rebook tickets
Of course not, you can cancel it later, but not now.
Cannot, once the order is placed and the ticket is refunded, a handling fee will be charged. If the date cannot be confirmed, it is still recommended to purchase tickets at the on-site ticket office for peace of mind.
Cannot, can arrive early, within half an hour later is okay; beyond that, it becomes void.
Cannot Can return ticket and rebook