在主角家装饰派对场地。 在其它地方装饰派对场地。 告知客人派对的细节。 选人陪护主角。 伪造活动瞒住主角。 派对正式开始前，仔细浏览一遍计划清单。 告诉客人在大惊喜时刻到来时应该怎么做。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
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. I