the unexpected guest meaning in English

春满琼楼
满琼楼

The unexpected guest disordered his plans
这位不速之客打乱了他的计划。
She rustled the unexpected guests up several dishes in less than half an hour
她用了不到半个小时就为那几位突然来访的客人做了了好几样菜。
The unexpected guest is welcomed , but whether that welcome is sincere or given out of kindness is another matter
不速之客还是会受到欢迎，但这种欢迎是否发自内心或只是出于礼貌，就不好说了。