King Charles' Coronation on May 6 will be smaller than the late Queen's service as fewer stands will be constructed in Westminster Abbey.
The number of guests will be reduced from 8,000 to approximately 2,000 people.
Buckingham Palace has approached the Abbey for more seating, but reducing the list of invitees will cause friction.
Only 20 MPs and 20 peers are expected to attend the ceremony, sparking uproar among politicians.
The decision to limit the number of politicians is reportedly still under discussion.
Several male members of the Royal Family, including Prince Andrew and Prince Harry, will not kneel and pay homage to the monarch as is customary.
The service will be shortened from the previous three-hour duration.
Faith leaders, the King's godchildren, current and previous prime ministers, foreign royals, world leaders, and Parliamentarians will attend.
After the royal dukes have paid homage, a senior representative from each rank (non-royal Dukes, Marquesses, Earls, Viscounts, and Barons) would do the same.