There were some issues with our hotel booking, but fortunately it all worked out.

worked 是动词 work 的过去式，work 在这里不是指"工作"，而是指"运作、起作用"。 out 是副词，表示"完全地、彻底地"。 work out 是一个短语动词，意思是"顺利解决、最终成功"，强调事情经过努力或发展后得到圆满结果。