People use pageantry to refer to the colourful and formal things that are done for special official or royal occasions, for example the wearing of special clothes and the playing of special music.
例句
...all the pageantry of an official state visit.正式国事访问的盛况
英汉词典释义
n.
壮丽的展示,盛况;正规庆典的传统特征
the pageantry of a royal wedding王室婚体的盛况
英英词典释义
Noun
1. a rich and spectacular ceremony
2. an elaborate representation of scenes from history etc; usually involves a parade with rich costumes