Does the small piece of paper on the passport need to be torn off? Do you need to pay tax if the amount is over a certain amount ?

After passing the security check, there will be a tearing place. It is best to open the packaging yourself when carrying luxury goods. If possible, carry it on your own. If you are checked for tax refund, it will be different. Some tax refunds are very expensive, even extremely expensive.

No need to tear

Where to go back? Tear off all the exit visa stickers before leaving Okinawa.

Don't you worry about it, they will tear it down themselves.