Article in English: If you are having the party at the honoree's place, you'll need to wait until they're not at home and decorate quickly. Choose decorations that are simple to put up. Ensure that the honoree won't be able to see the decorations before they walk in to the main party room. Keep decorations away from windows that the honoree could look into as they walk in. If you won't have much time to decorate, stick to decorating the main party room first and then you can decorate other rooms as you have time. If you're not hosting the party at the honoree's house, you can easily set up decorations in advance. You can decorate with the theme of the party, your honoree's favorite colors, or standard birthday decorations like balloons and streamers. Remember that the entrance to the party room should not give away the surprise, so avoid putting up banners or balloons in the entryway. Ask a few of the guests to help you set up decorations before the other guests arrive. Once guests have RSVP'd, call them or leave more detailed information on a social media page that the honoree can't see. To keep the party a secret, tell the guests where they can park, where to put gifts or food when they arrive, any costume or dress-code requirements, and an exact time to show up (usually about 30 minutes before the big surprise). Avoid giving out party details to too many people or to those who aren't coming to the party. This increases the risk that the honoree will find out about the surprise. Find a chaperone who will escort the honoree while you plan and set up the party. Pick a chaperone that the honoree feels comfortable with (such as a spouse or best friend). The chaperone can distract and redirect the honoree until it's time for the surprise party. Tell the chaperone that you may contact them if you need them to stall for more time or get the honoree to the party right away. The easiest way to distract the honoree is to plan a different event that they know about. For example, have the chaperone invite the honoree out to dinner or an...

Summary in Vietnamese:
Trang hoàng cho buổi tiệc tại nơi ở của nhân vật chính. Trang hoàng buổi tiệc ở địa điểm khác. Cho khách mời biết về chi tiết của buổi tiệc. Chọn một người "hộ tống". Tạo một sự kiện giả để “điệu hổ ly sơn”. Xem lại danh sách kiểm những việc cần làm trước khi buổi tiệc bắt đầu. Dặn khách mời phải làm gì khi vào thời khắc quan trọng.