Revelation 11:16

the twenty-four elders
See commentary on Revelation 4:4.

their thrones
The thrones belong to the elders. This argues for their identification as the redeemed. See commentary on Revelation 4:4.

fell on their faces
The elders are repeatedly found prostrate before the throne in worship (Rev. Rev. 4:10+; Rev. 5:8+, Rev. 5:14+; Rev. 7:11+; Rev. 19:4+).