A fascinating thread! Thanks, Brad!
Just wanted to add my two cents' worth.
In the Confession of Dositheus (I believe) that was written against Protestantism (as well as in other times ie. Met. Stefan Yavorsky's efforts), the Orthodox Church maintained that the only attitude toward the Most Holy Mysteries of the Body and Blood of OLGS Jesus Christ is one of adoration.
Archbishop Raya wrote that the East has a "dynamic" devotion to Christ in Holy Communion and the West has, with the Adoration of the Reserved Communion, a "static" devotion.
I don't know if we can make such a hard and fast distinction here so as to accuse the West of having devotion to Holy Communion as an "end in itself."
Certainly, the West has adoration of Holy Communion but has also developed the practice of frequent Communion much moreso than the East.
In the East, the often onerous preparations for Holy Communion and other factors have led to infrequent Communion - something that movements like the Kollyvades and saints like John of Kronstadt have sought to alter.
Eastern Catholics (until the advent of "Orthodox in communion with Rome"
) have developed the same kind of adoration of Holy Communion, even with the monstrance - something that Orthodox parishes in E. Europe have ALSO adopted.
Our New Martyrs of the soviet yoke had GREAT devotion to Holy Communion, especially Bl. Theodore Romzha and Bl. Pavel Goydicz.
Pat. Josef Slipyj never failed to do his Hour of Adoration at the Church of St Neil in Rome.
I've met UGCC priests from Ukraine who say that their entire villages and towns are taken up by the perpetual adoration of the Holy Eucharist before the Altar - night and day, including the very young who have their prayer-books and assigned daily hour.
Bl. Leonid Fyodorov, the Russian Catholic New Martyr, said that when it comes to adoration of the Holy Eucharist "then we are the students of the Roman West."
While we EC's here would like to reconstruct the actual devotional practice of our parishes in this regard, the fact is that Eucharistic Adoration has been an integral part of our Church life for a very long time now.
To try and see our Churches' practice in this regard as part and parcel of the Orthodox tradition is simply wishful thinking and only to be had in particular parishes.
I remember the true story of a group of UGCC nuns who were adoring the Holy Eucharist on the altar night and day.
They were sentenced to death by freezing on top of a mountain by the soviets.
People sent there lasted only a day before succumbing to the cold.
And yet, on the third day, the guards came and saw them singing Eucharistic hymns and the Rosary et al. and they were quite warm and even smiling!
The guards let them go . . .
As for particular devotions to the Holy Eucharist within the liturgical context of the Divine Liturgy, the EC tradition is second to none.
We have formal offices of preparation and thanksgiving, we are to pray the Divine Office in full a day before Holy Communion (in the Old Rite tradition, for a week before that is satisfied by reciting the Jesus Prayer 1,000 times daily for seven days before), we kiss the edge of the Chalice to venerate the Wounded Side of Christ from which we are nourished in Communion, our heads are touched by the Chalice afterward, and we are enjoined not to make bows to the ground for the rest of the day.