The throne or cathedra.
The full Pontifical High Mass is carried out when the bishop celebrates the Mass at the throne (or cathedra) in his own cathedral church, or with permission at the throne in another diocese. - Wiki
It takes a village.
Sometimes it seems people who love great pomp and extravagance especially love a Mass at the Throne because of it's drama. It is very rich in symbolism and vestment, as well as ceremony. Personally, I'm more attracted to a simple 'low' Mass, very quiet and prayerful. Often when I see notices for a Mass at the Throne to be celebrated here or there, it strikes me in the same way as an ad for the symphony or opera would - an invitation to a performance. It involves a large number of clerics and servers for the celebration, which is why I stole the term, 'it takes a village'. Indeed it does, which explains the notices and invitations (beyond a parish or diocesan boundaries) to attend. I have no doubt quietly assisting, or hearing and watching the elaborate ceremonies and solemn choreography can be a contemplative, prayerful experience, but I'm fine with the Ordinary Form of Mass, and/or, the simple Low Mass.
Ceremonial stockings of silk, sometimes interwoven with gold threads, and even heavily embroidered, worn by the celebrant of a pontifical Mass. Originally worn by priests, they were reserved about the eighth century for the exclusive use of bishops, a privilege recently extended to lesser prelates. In colour they correspond to the chasuble, but are never worn with black. - NLM
Things difficult wear w/out assistance.
This could be where the phrase "four sheets to the wind" came from?
Church floors can be dirty.
It can be very cold in European cathedrals.
All vested at the throne.
The source and summit, the Eucharist.
I love a simple Low Mass.
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*Buskins can be worn by laymen now as well.