但是不给砖又过意不去，so here you go. 哈哈。
(1) late-middle-aged and fun-loving couple.
late-middle-aged这样说觉得不好，我觉得知道你想说的意思，但是late在这里是不是会有歧义？as in late apple founder. I would suggest to say a fun-loving couple in their fifties, maybe?
(2)It seems that an agile mind is forever trapped in their aging bodies. trapped觉得一般用得比较贬义，觉得这里不是太合适. Maybe(not totally sure， 我的小想法：后面的and they...的结构和这一句不连贯，and在那里有点儿小怪，说话时可以，但是写在这里觉得不是特别好。): in their aging bodies, it seems there lies an agile mind, which amazes us with fresh and creative ideas for having fun（maybe fun ideas).
(3)the pile of costumes, some of them(change to which or start a new sentence) were made by the hostess herself and her two daughters years ago.
